Failing dEQP-GLES3.functional.fbo.color.repeated_clear.sample.tex2d.rgb16f

http://build.chromium.org/p/chromium.gpu.fyi/builders/Win7%20Release%20dEQP%20%28NVIDIA%29/builds/4651

Likely missing a suppression for this test. It likely passed
only because the extension was missing and it was passing as
not supported.

BUG=angleproject:1229

This reverts commit 39f9251d.

Change-Id: Ia703378d5aaacafc14503aff0b52a795b7eb4467
Reviewed-on: https://chromium-review.googlesource.com/319080Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>