Remove remaining references to test_shell_tests now that the bots have been updated.

BUG=126514
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/14841004

git-svn-id: http://src.chromium.org/svn/trunk/src/build@198146 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -681,7 +681,6 @@
           'type': 'none',
           'dependencies': [
             '../webkit/webkit.gyp:test_shell',
-            '../webkit/webkit.gyp:test_shell_tests',
             '../webkit/webkit.gyp:pull_in_webkit_unit_tests',
             '../webkit/webkit.gyp:pull_in_DumpRenderTree',
           ],