[Android WebView] Remove deleted files from third_party_whitelist

Remove:
cc/copyfiles.py
webkit/compositor_bindings/copyfiles.py

These files were deleted in https://chromiumcodereview.appspot.com/11779006

TBR=torne@chromium.org
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/11827048

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176067 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/tools/third_party_files_whitelist.txt

@@ -324,6 +324,3 @@ webkit/tools/test_shell/mac/English.lproj/InfoPlist.strings
 webkit/tools/test_shell/resources/README.txt
 # String 'copyright' used in resources.
 webkit/tools/test_shell/resources/test_shell.rc
-# String "Copyright" used in comments.
-cc/copyfiles.py
-webkit/compositor_bindings/copyfiles.py