Revert "virglrenderer: carry a patch for venus global fencing"

This reverts commit 74b18b51d4d4a2aa36e9f29dcea7c79065c65d4d.

Reason for revert: https://bugs.chromium.org/p/chromium/issues/detail?id=1223459

Original change's description:
> virglrenderer: carry a patch for venus global fencing
>
> BUG=b:178105513
> BUG=b:176196438
> TEST=vulkan and gl apps run without sync issues
>
> Change-Id: If34021a05fa03d263e6b07ad40eb75c7ded40cb8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2961265
> Reviewed-by: Yiwei Zhang <zzyiwei@google.com>
> Tested-by: Yiwei Zhang <zzyiwei@google.com>
> Commit-Queue: Yiwei Zhang <zzyiwei@google.com>

Bug: b:178105513
Bug: b:176196438
Change-Id: Ia57bb9a298400eca5e65866e610d79a00e65c62e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2987699
Auto-Submit: Yiwei Zhang <zzyiwei@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Yiwei Zhang <zzyiwei@google.com>
2 files changed