Remove failed entries in gpu pixel expectations

TBR=zmo@chromium.org
TBR_REASON=Updating test expectations after reference images are generated
BUG=697582
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2777763005
Cr-Commit-Position: refs/heads/master@{#460425}
1 file changed