Revert "Fix file.copy recipe_module to not fail if files are already equal."

scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json

Index: scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json
diff --git a/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json b/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json
index 48852d449fa8725a40cc5e4abe8d32e4a7d73796..5ae011228303028b2784e98625441878954c0742 100644
--- a/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json
+++ b/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_android_android_coverage.json
@@ -978,7 +978,7 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\n# Apparently, shutil.copy fails if files are binary-equal on *nix OSes.\n# See http://crbug.com/636168#c8.\nif hasattr(shutil, '_samefile'):\n  if shutil._samefile(sys.argv[1], sys.argv[2]):\n    sys.exit(0)\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "fake/file1.java",
       "/path/to/tmp/"
     ],
@@ -993,7 +993,7 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\n# Apparently, shutil.copy fails if files are binary-equal on *nix OSes.\n# See http://crbug.com/636168#c8.\nif hasattr(shutil, '_samefile'):\n  if shutil._samefile(sys.argv[1], sys.argv[2]):\n    sys.exit(0)\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "fake/file2.java;",
       "/path/to/tmp/"
     ],
@@ -1008,7 +1008,7 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\n# Apparently, shutil.copy fails if files are binary-equal on *nix OSes.\n# See http://crbug.com/636168#c8.\nif hasattr(shutil, '_samefile'):\n  if shutil._samefile(sys.argv[1], sys.argv[2]):\n    sys.exit(0)\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "fake/file3.java",
       "/path/to/tmp/"
     ],
@@ -1701,7 +1701,7 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\n# Apparently, shutil.copy fails if files are binary-equal on *nix OSes.\n# See http://crbug.com/636168#c8.\nif hasattr(shutil, '_samefile'):\n  if shutil._samefile(sys.argv[1], sys.argv[2]):\n    sys.exit(0)\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "[BUILDER_CACHE]/android/src/chrome/VERSION",
       "/path/to/tmp/"
     ],