Cleanup workaround for grit version dependency

BUG=webrtc:5160
R=phoglund@webrtc.org

Review URL: https://codereview.webrtc.org/1420653006 .

Cr-Commit-Position: refs/heads/master@{#10540}

setup_links.py

@@ -101,7 +101,6 @@ if 'ios' in target_os:
   DIRECTORIES.append('third_party/class-dump')
 
 FILES = {
-  'chrome/VERSION': None,  # TODO(kjellander): Get rid of this; webrtc:5160.
   'tools/isolate_driver.py': None,
   'third_party/BUILD.gn': None,
 }