compiled_action: Don't add host_executable to inputs.

host_tools is already in deps, so this shouldn't be necessary.  The only
case where this makes a difference is if someone manually touches the built
executable in the build dir.

Bug: none
Change-Id: I6abd3143bf0ec9b17f7ff3fc0f6681a80dff5827
Reviewed-on: https://chromium-review.googlesource.com/990497Reviewed-by: Albert J. Wong <ajwong@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547595}

build/compiled_action.gni

@@ -111,9 +111,6 @@ template("compiled_action") {
         get_label_info(host_tool, "root_out_dir") + "/" +
         get_label_info(host_tool, "name") + _host_executable_suffix
 
-    # Add the executable itself as an input.
-    inputs += [ host_executable ]
-
     deps += [ host_tool ]
 
     # The script takes as arguments the binary to run, and then the arguments
@@ -159,9 +156,6 @@ template("compiled_action_foreach") {
         get_label_info(host_tool, "root_out_dir") + "/" +
         get_label_info(host_tool, "name") + _host_executable_suffix
 
-    # Add the executable itself as an input.
-    inputs += [ host_executable ]
-
     deps += [ host_tool ]
 
     # The script takes as arguments the binary to run, and then the arguments