Remove webgl2 suppression on Linux/GL/NVIDIA/passthrough

Test: conformance/uniforms/out-of-bounds-uniform-array-access.html
The breaking CL was reverted, this should now pass.

Bug: chromium:1042252
Change-Id: I96a76566ef5020b08d61965980b5d8be7ad1cbfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2002891Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
Cr-Commit-Position: refs/heads/master@{#732402}

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -277,7 +277,6 @@ crbug.com/835364 [ opengl win passthrough ] conformance/renderbuffers/depth-rend
 
 # Passthrough command decoder / Linux / OpenGL / NVIDIA
 crbug.com/766918 [ opengl linux passthrough nvidia ] conformance2/textures/image_bitmap_from_video/* [ RetryOnFailure ]
-crbug.com/angleproject/4298 [ opengl linux passthrough nvidia ] conformance/uniforms/out-of-bounds-uniform-array-access.html [ Failure ]
 crbug.com/965648 [ opengl linux passthrough nvidia ] deqp/functional/gles3/shaderstruct.html [ RetryOnFailure ]