GitLab

UI Layout tests are not flaky, so delete the FLAKY label from
linux and windows.

BUG=56364
TEST=test no longer marked flaky
TBR=scherkus

Review URL: http://codereview.chromium.org/6324010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72442 0039d316-1c4b-4281-b951-d872f2087c98