Remove Windows WebGL2-on-desktop-GL testing.

This is eating up a lot of capacity for a config that we don't
intend to ship. This removes the tests from several NVIDIA and Intel
Windows GPU testing configs.

Bug: angleproject:5305
Change-Id: I1f11f6751101b18b664e99e83f34b2834fe79913
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2525041Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825481}

testing/buildbot/test_suite_exceptions.pyl

@@ -2833,8 +2833,6 @@
   },
   'webgl2_conformance_gl_passthrough_tests': {
     'remove_from': [
-      # Not enough capacity. https://crbug.com/946694
-      'ANGLE GPU Win10 x64 Release (Intel HD 630)',
       # Not enough capacity. https://crbug.com/982294
       'Mac Pro FYI Release (AMD)',
       'Mac FYI Retina Release (NVIDIA)',

testing/buildbot/test_suites.pyl

@@ -5187,7 +5187,6 @@
     'gpu_angle_win_intel_nvidia_telemetry_tests': [
       'gpu_info_collection_telemetry_tests',
       'gpu_webgl2_conformance_d3d11_passthrough_telemetry_tests',
-      'gpu_webgl2_conformance_gl_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d9_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d11_passthrough_telemetry_tests',
       'gpu_webgl_conformance_gl_passthrough_telemetry_tests',
@@ -5500,7 +5499,6 @@
       'gpu_common_and_optional_telemetry_tests',
       'gpu_passthrough_telemetry_tests',
       'gpu_webgl2_conformance_d3d11_passthrough_telemetry_tests',
-      'gpu_webgl2_conformance_gl_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d11_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d9_passthrough_telemetry_tests',
       'gpu_webgl_conformance_gl_passthrough_telemetry_tests',
@@ -5540,7 +5538,6 @@
       'gpu_common_and_optional_telemetry_tests',
       'gpu_passthrough_telemetry_tests',
       'gpu_webgl2_conformance_d3d11_passthrough_telemetry_tests',
-      'gpu_webgl2_conformance_gl_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d11_passthrough_telemetry_tests',
       'gpu_webgl_conformance_d3d9_passthrough_telemetry_tests',
       'gpu_webgl_conformance_fast_call_passthrough_telemetry_tests',