Seems to make the following dEQP test flaky:
dEQP-GLES3.functional.lifetime.attach.deleted_output.buffer_transform_feedback

doesn't show up on every bot test, but run it a few times and it'll flake. Reverting while I investigate.

BUG=angleproject:1327
This reverts commit 3477f3a6.

Change-Id: Ic23a392526f5f6e107cf0aa06448389804d6b208
Reviewed-on: https://chromium-review.googlesource.com/337961Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>