Remove GL asserts for geo shaders to not have uniforms

BUG=skia:

Change-Id: I51468c808f8a2e6593c237b4c4368df2f6729dff
Reviewed-on: https://skia-review.googlesource.com/8421
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed