Revert "Synchronize Virtual Threads"

Revert submission 37178947-SyncVT

Reason for revert: DroidMonitor: Potential culprit for http://b/487668811 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Fix: 487668811

Reverted changes: /q/submissionid:37178947-SyncVT

Bug: 454244174
Change-Id: Ic96a8e0e0c41e0c42bfe20f6efd1dbbbdea32e8e