[e2e][sl4f client][chore] Clean up now unused src/.../sl4f (moved to sdk)

This has been moved to sdk and all references have been updated.

Test: fx build
Change-Id: I0454c73c44fead4ca99971c9fc1e96be5fd1a5c4
diff --git a/src/testing/BUILD.gn b/src/testing/BUILD.gn
index c06fc52..3b99cb4 100644
--- a/src/testing/BUILD.gn
+++ b/src/testing/BUILD.gn
@@ -7,7 +7,6 @@
   deps = [
     ":tests",
     "host_target_testing",
-    "sl4f",
   ]
 }
 
diff --git a/src/testing/sl4f/BUILD.gn b/src/testing/sl4f/BUILD.gn
deleted file mode 100644
index 0b7b054..0000000
--- a/src/testing/sl4f/BUILD.gn
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright 2019 The Fuchsia Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-group("sl4f") {
-  testonly = true
-  deps = [
-    "client",
-  ]
-}
diff --git a/src/testing/sl4f/client/BUILD.gn b/src/testing/sl4f/client/BUILD.gn
deleted file mode 100644
index fa561ed1..0000000
--- a/src/testing/sl4f/client/BUILD.gn
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright 2019 The Fuchsia Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("//build/dart/dart_library.gni")
-
-dart_library("client") {
-  package_name = "src_sl4f"
-
-  sources = [
-    "src_sl4f.dart",
-  ]
-
-  deps = [
-    "//sdk/testing/sl4f/client",
-  ]
-}
diff --git a/src/testing/sl4f/client/OWNERS b/src/testing/sl4f/client/OWNERS
deleted file mode 100644
index 4cf57a7..0000000
--- a/src/testing/sl4f/client/OWNERS
+++ /dev/null
@@ -1,4 +0,0 @@
-isma@google.com
-perley@google.com
-rosswang@google.com
-*
\ No newline at end of file
diff --git a/src/testing/sl4f/client/analysis_options.yaml b/src/testing/sl4f/client/analysis_options.yaml
deleted file mode 100644
index b237802..0000000
--- a/src/testing/sl4f/client/analysis_options.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-# Copyright 2019 The Fuchsia Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# This is a copy of //topaz/tools/analysis_options.yaml; we should revisit
-# importing this instead after the flower shuffle.
-
-include: ../../../../sdk/testing/sl4f/client/analysis_options.yaml
\ No newline at end of file
diff --git a/src/testing/sl4f/client/lib/src_sl4f.dart b/src/testing/sl4f/client/lib/src_sl4f.dart
deleted file mode 100644
index 7ab40fa..0000000
--- a/src/testing/sl4f/client/lib/src_sl4f.dart
+++ /dev/null
@@ -1,5 +0,0 @@
-// Copyright 2019 The Fuchsia Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/// This package has moved to //sdk/testing/sl4f/client
diff --git a/src/testing/sl4f/client/pubspec.yaml b/src/testing/sl4f/client/pubspec.yaml
deleted file mode 100644
index 64e8f21..0000000
--- a/src/testing/sl4f/client/pubspec.yaml
+++ /dev/null
@@ -1,3 +0,0 @@
-# Copyright 2019 The Fuchsia Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.