Remove redundant build-tags

Files that are suffixed with `_linux.go` or `_windows.go` are
already only built on Linux / Windows, so these build-tags
were redundant.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
diff --git a/cmd/dockerd/daemon_linux.go b/cmd/dockerd/daemon_linux.go
index b58f0f0..b09fed9 100644
--- a/cmd/dockerd/daemon_linux.go
+++ b/cmd/dockerd/daemon_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package main
 
 import systemdDaemon "github.com/coreos/go-systemd/daemon"
diff --git a/container/container_windows.go b/container/container_windows.go
index 5cb2e45..92b50a6 100644
--- a/container/container_windows.go
+++ b/container/container_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package container
 
 import (
diff --git a/daemon/archive_tarcopyoptions_windows.go b/daemon/archive_tarcopyoptions_windows.go
index 535efd2..500e128 100644
--- a/daemon/archive_tarcopyoptions_windows.go
+++ b/daemon/archive_tarcopyoptions_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package daemon
 
 import (
diff --git a/daemon/configs_linux.go b/daemon/configs_linux.go
index af20ad7..d498c95 100644
--- a/daemon/configs_linux.go
+++ b/daemon/configs_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package daemon
 
 func configsSupported() bool {
diff --git a/daemon/configs_windows.go b/daemon/configs_windows.go
index 7cb2e9c..d498c95 100644
--- a/daemon/configs_windows.go
+++ b/daemon/configs_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package daemon
 
 func configsSupported() bool {
diff --git a/daemon/container_windows.go b/daemon/container_windows.go
index 6fdd1e6..6db130a 100644
--- a/daemon/container_windows.go
+++ b/daemon/container_windows.go
@@ -1,5 +1,3 @@
-//+build windows
-
 package daemon
 
 import (
diff --git a/daemon/graphdriver/driver_linux.go b/daemon/graphdriver/driver_linux.go
index f59862d..d2d7c9f 100644
--- a/daemon/graphdriver/driver_linux.go
+++ b/daemon/graphdriver/driver_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package graphdriver
 
 import (
diff --git a/daemon/graphdriver/vfs/copy_linux.go b/daemon/graphdriver/vfs/copy_linux.go
index a632d35..1a63a11 100644
--- a/daemon/graphdriver/vfs/copy_linux.go
+++ b/daemon/graphdriver/vfs/copy_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package vfs
 
 import "github.com/docker/docker/daemon/graphdriver/copy"
diff --git a/daemon/graphdriver/vfs/quota_linux.go b/daemon/graphdriver/vfs/quota_linux.go
index 032c15b..d40d0d1 100644
--- a/daemon/graphdriver/vfs/quota_linux.go
+++ b/daemon/graphdriver/vfs/quota_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package vfs
 
 import "github.com/docker/docker/daemon/graphdriver/quota"
diff --git a/daemon/initlayer/setup_windows.go b/daemon/initlayer/setup_windows.go
index b47563e..ff78a4d 100644
--- a/daemon/initlayer/setup_windows.go
+++ b/daemon/initlayer/setup_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package initlayer
 
 import (
diff --git a/daemon/logger/gcplogs/gcplogging_linux.go b/daemon/logger/gcplogs/gcplogging_linux.go
index 8917bdd..41a0936 100644
--- a/daemon/logger/gcplogs/gcplogging_linux.go
+++ b/daemon/logger/gcplogs/gcplogging_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package gcplogs
 
 import (
diff --git a/daemon/secrets_linux.go b/daemon/secrets_linux.go
index fca4e12..6ae0117 100644
--- a/daemon/secrets_linux.go
+++ b/daemon/secrets_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package daemon
 
 func secretsSupported() bool {
diff --git a/daemon/secrets_windows.go b/daemon/secrets_windows.go
index 9054354..6ae0117 100644
--- a/daemon/secrets_windows.go
+++ b/daemon/secrets_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package daemon
 
 func secretsSupported() bool {
diff --git a/daemon/selinux_linux.go b/daemon/selinux_linux.go
index fb2578b..46da7f1 100644
--- a/daemon/selinux_linux.go
+++ b/daemon/selinux_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package daemon
 
 import "github.com/opencontainers/selinux/go-selinux"
diff --git a/daemon/stats/collector_windows.go b/daemon/stats/collector_windows.go
index 5fb27ce..03109fd 100644
--- a/daemon/stats/collector_windows.go
+++ b/daemon/stats/collector_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package stats
 
 // platformNewStatsCollector performs platform specific initialisation of the
diff --git a/daemon/volumes_windows.go b/daemon/volumes_windows.go
index 62c9e23..bfb5133 100644
--- a/daemon/volumes_windows.go
+++ b/daemon/volumes_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package daemon
 
 import (
diff --git a/distribution/pull_v2_windows.go b/distribution/pull_v2_windows.go
index b4573e1..08ff437 100644
--- a/distribution/pull_v2_windows.go
+++ b/distribution/pull_v2_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package distribution
 
 import (
diff --git a/opts/hosts_windows.go b/opts/hosts_windows.go
index 7c239e0..684f0e1 100644
--- a/opts/hosts_windows.go
+++ b/opts/hosts_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package opts
 
 // DefaultHost constant defines the default host string used by docker on Windows
diff --git a/pkg/archive/archive_windows.go b/pkg/archive/archive_windows.go
index a22410c..66243a6 100644
--- a/pkg/archive/archive_windows.go
+++ b/pkg/archive/archive_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package archive
 
 import (
diff --git a/pkg/directory/directory_windows.go b/pkg/directory/directory_windows.go
index 6fb0917..efe05ce 100644
--- a/pkg/directory/directory_windows.go
+++ b/pkg/directory/directory_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package directory
 
 import (
diff --git a/pkg/dmesg/dmesg_linux.go b/pkg/dmesg/dmesg_linux.go
index 7df7f3d..2fb494e 100644
--- a/pkg/dmesg/dmesg_linux.go
+++ b/pkg/dmesg/dmesg_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package dmesg
 
 import (
diff --git a/pkg/fsutils/fsutils_linux.go b/pkg/fsutils/fsutils_linux.go
index e6094b5..7596259 100644
--- a/pkg/fsutils/fsutils_linux.go
+++ b/pkg/fsutils/fsutils_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package fsutils
 
 import (
diff --git a/pkg/homedir/homedir_linux.go b/pkg/homedir/homedir_linux.go
index 012fe52..a7cd2e1 100644
--- a/pkg/homedir/homedir_linux.go
+++ b/pkg/homedir/homedir_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package homedir
 
 import (
diff --git a/pkg/idtools/idtools_windows.go b/pkg/idtools/idtools_windows.go
index 94ca33a..ec49177 100644
--- a/pkg/idtools/idtools_windows.go
+++ b/pkg/idtools/idtools_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package idtools
 
 import (
diff --git a/pkg/ioutils/temp_windows.go b/pkg/ioutils/temp_windows.go
index c258e5f..fb14c95 100644
--- a/pkg/ioutils/temp_windows.go
+++ b/pkg/ioutils/temp_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package ioutils
 
 import (
diff --git a/pkg/mount/mountinfo_linux.go b/pkg/mount/mountinfo_linux.go
index be69fee..dde889e 100644
--- a/pkg/mount/mountinfo_linux.go
+++ b/pkg/mount/mountinfo_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package mount
 
 import (
diff --git a/pkg/mount/sharedsubtree_linux.go b/pkg/mount/sharedsubtree_linux.go
index 8ceec84..f3c13e5 100644
--- a/pkg/mount/sharedsubtree_linux.go
+++ b/pkg/mount/sharedsubtree_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package mount
 
 // MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
diff --git a/pkg/parsers/kernel/kernel_windows.go b/pkg/parsers/kernel/kernel_windows.go
index e598672..93620ee 100644
--- a/pkg/parsers/kernel/kernel_windows.go
+++ b/pkg/parsers/kernel/kernel_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package kernel
 
 import (
diff --git a/pkg/reexec/command_linux.go b/pkg/reexec/command_linux.go
index 05319ea..d3f1061 100644
--- a/pkg/reexec/command_linux.go
+++ b/pkg/reexec/command_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package reexec
 
 import (
diff --git a/pkg/reexec/command_windows.go b/pkg/reexec/command_windows.go
index ca871c4..c320876 100644
--- a/pkg/reexec/command_windows.go
+++ b/pkg/reexec/command_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package reexec
 
 import (
diff --git a/pkg/signal/signal_windows.go b/pkg/signal/signal_windows.go
index 440f270..c84a63e 100644
--- a/pkg/signal/signal_windows.go
+++ b/pkg/signal/signal_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package signal
 
 import (
diff --git a/pkg/sysinfo/numcpu_linux.go b/pkg/sysinfo/numcpu_linux.go
index f1d2d9d..5739b33 100644
--- a/pkg/sysinfo/numcpu_linux.go
+++ b/pkg/sysinfo/numcpu_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package sysinfo
 
 import (
diff --git a/pkg/sysinfo/numcpu_windows.go b/pkg/sysinfo/numcpu_windows.go
index 1d89dd5..3516182 100644
--- a/pkg/sysinfo/numcpu_windows.go
+++ b/pkg/sysinfo/numcpu_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package sysinfo
 
 import (
diff --git a/pkg/sysinfo/sysinfo_windows.go b/pkg/sysinfo/sysinfo_windows.go
index 4e6255b..8889318 100644
--- a/pkg/sysinfo/sysinfo_windows.go
+++ b/pkg/sysinfo/sysinfo_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package sysinfo
 
 // New returns an empty SysInfo for windows for now.
diff --git a/pkg/system/chtimes_windows.go b/pkg/system/chtimes_windows.go
index 45428c1..a1f4fd5 100644
--- a/pkg/system/chtimes_windows.go
+++ b/pkg/system/chtimes_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package system
 
 import (
diff --git a/pkg/system/filesys_windows.go b/pkg/system/filesys_windows.go
index a61b53d..b1e46d9 100644
--- a/pkg/system/filesys_windows.go
+++ b/pkg/system/filesys_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package system
 
 import (
diff --git a/pkg/system/mknod_windows.go b/pkg/system/mknod_windows.go
index 2e863c0..ba2692a 100644
--- a/pkg/system/mknod_windows.go
+++ b/pkg/system/mknod_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package system
 
 // Mknod is not implemented on Windows.
diff --git a/pkg/system/umask_windows.go b/pkg/system/umask_windows.go
index 13f1de1..71fc0f1 100644
--- a/pkg/system/umask_windows.go
+++ b/pkg/system/umask_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package system
 
 // Umask is not supported on the windows platform.
diff --git a/pkg/term/term_windows.go b/pkg/term/term_windows.go
index b6819b3..284ac63 100644
--- a/pkg/term/term_windows.go
+++ b/pkg/term/term_windows.go
@@ -1,5 +1,3 @@
-// +build windows
-
 package term
 
 import (
diff --git a/plugin/backend_linux.go b/plugin/backend_linux.go
index 28a6c18..1f2830a 100644
--- a/plugin/backend_linux.go
+++ b/plugin/backend_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package plugin
 
 import (
diff --git a/plugin/v2/plugin_linux.go b/plugin/v2/plugin_linux.go
index be82363..9590df4 100644
--- a/plugin/v2/plugin_linux.go
+++ b/plugin/v2/plugin_linux.go
@@ -1,5 +1,3 @@
-// +build linux
-
 package v2
 
 import (