Remove gsutil repository override

This isn't needed in Chrome 32.

vendor/chromium/.gclient.in

@@ -18,7 +18,6 @@ solutions = [
       "src/chrome/tools/test/reference_build/chrome_linux": None,
       "src/chrome/tools/test/reference_build/chrome_mac": None,
       "src/third_party/hunspell_dictionaries": None,
-      "build/third_party/gsutil" : "svn://svn.chromium.org/gsutil/trunk/src@263",
     },
   },
 ]