gpu driver bugs: enable VP9.2 video decoding on AMD

This CL removes the VP9.2 video decoding workaround after some other
CLs paved the way for it (see bug). Verified on my local Zork.

Bug: b/1695991197
Change-Id: Ie1f5343ad3f181103d550e5061cfd54ea2477fd4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2644290
Commit-Queue: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Auto-Submit: Miguel Casas <mcasas@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845974}

gpu/config/gpu_driver_bug_list.json

@@ -3617,19 +3617,6 @@
         "max_msaa_sample_count_4"
       ]
     },
-    {
-      "id": 361,
-      "description": "VP9 Profile 2 decoding doesn't work on ChromeOS AMDs",
-      "cr_bugs": [1147466],
-      "os": {
-        "type": "chromeos"
-      },
-      "vendor_id": "0x1002",
-      "driver_vendor": "Mesa",
-      "features": [
-        "disable_accelerated_vp9_profile2_decode"
-      ]
-    },
     {
       "id": 362,
       "description": "Promote 2 videos to hardware overlays on Windows Intel platforms",