Update WebGL2 conformance expectations for Mac Passthrough.

Remove failure supression for
deqp/functional/gles3/framebufferblit/default_framebuffer_00.html

TBR=kbr@chromium.org

BUG=angleproject:4632

Change-Id: I5baf02a8a80601dbadd5404fe8c3c3bde6bcc1e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2209332Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771065}

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

@@ -577,7 +577,6 @@ crbug.com/1042011 [ mac intel-0xa2e no-passthrough ] conformance2/textures/canva
 
 
 # Mac Passthrough
-crbug.com/982294 [ mac passthrough ] deqp/functional/gles3/framebufferblit/default_framebuffer_00.html [ Failure ]
 crbug.com/982294 [ mac passthrough ] conformance2/textures/misc/tex-mipmap-levels.html [ Failure ]
 crbug.com/982294 [ mac passthrough ] conformance2/textures/misc/tex-srgb-mipmap.html [ Failure ]
 crbug.com/982294 [ mac passthrough ] conformance2/renderbuffers/multisampled-depth-renderbuffer-initialization.html [ Failure ]