graphics_dEQP: don't warn if NotPass is empty.

This warning causes too manual checking on wmatrix and has little
value.

BUG=None.
TEST=Ran locally.

Change-Id: Ibc0caafe09548de5bc0568e62e775c621d4c21bf
Reviewed-on: https://chromium-review.googlesource.com/327705
Reviewed-by: Ilja Friedel <ihf@chromium.org>
Tested-by: Ilja Friedel <ihf@chromium.org>
1 file changed