Revert "[botanist] Fastboot continue back to fuchsia"

This reverts commit a5e101a4ee355ae0b050763d6f7fc33045ab6c88.

Reason for revert: did not work and introduces a new failure mode as `fastboot continue` hangs.

Original change's description:
> [botanist] Fastboot continue back to fuchsia
> 
> If fastboot is set, continue back to fuchsia after booting.
> 
> Change-Id: I29f686672705359d82b9aba487edfd93fecdfc3d

TBR=phosek@google.com,raggi@google.com,joshuaseaton@google.com,nmulcahey@google.com

Change-Id: I322cf596299a0a976cf0bb7a9ce9c5362bd943e6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
diff --git a/cmd/botanist/run.go b/cmd/botanist/run.go
index e6db6ee..d262036 100644
--- a/cmd/botanist/run.go
+++ b/cmd/botanist/run.go
@@ -18,7 +18,6 @@
 	"time"
 
 	"fuchsia.googlesource.com/tools/botanist"
-	"fuchsia.googlesource.com/tools/fastboot"
 	"fuchsia.googlesource.com/tools/netboot"
 	"fuchsia.googlesource.com/tools/pdu"
 	"fuchsia.googlesource.com/tools/retry"
@@ -136,16 +135,6 @@
 		return err
 	}
 
-	// TODO(IN-892): Necessary to continue back to fuchsia after rebooting.
-	if r.fastboot != "" {
-		ctx, cancel := context.WithTimeout(ctx, 2*time.Minute)
-		defer cancel()
-		f := fastboot.Fastboot{r.fastboot}
-		if _, err := f.Continue(ctx); err != nil {
-			return err
-		}
-	}
-
 	// Run command.
 	// The subcommand is put in its own process group so that no subprocesses it spins up
 	// are orphaned on cancelation.
diff --git a/cmd/botanist/zedboot.go b/cmd/botanist/zedboot.go
index b24f244..f6588fd 100644
--- a/cmd/botanist/zedboot.go
+++ b/cmd/botanist/zedboot.go
@@ -24,7 +24,6 @@
 	"time"
 
 	"fuchsia.googlesource.com/tools/botanist"
-	"fuchsia.googlesource.com/tools/fastboot"
 	"fuchsia.googlesource.com/tools/netboot"
 	"fuchsia.googlesource.com/tools/pdu"
 	"fuchsia.googlesource.com/tools/retry"
@@ -259,16 +258,6 @@
 		return err
 	}
 
-	// TODO(IN-892): Necessary to continue back to fuchsia after rebooting.
-	if cmd.fastboot != "" {
-		ctx, cancel := context.WithTimeout(ctx, 2*time.Minute)
-		defer cancel()
-		f := fastboot.Fastboot{cmd.fastboot}
-		if _, err := f.Continue(ctx); err != nil {
-			return err
-		}
-	}
-
 	// Handle host commands
 	// TODO(IN-831): Remove when host-target-interaction infra is ready
 	if cmd.hostCmd != "" {