Revert "sync: Fix a race condition between release_obj and print_obj"

This reverts commit f49d902f9618513be72a56dc0b2f238218aa7c22.
Revert "sync: signal pt before sync_timeline object gets destroyed"

This reverts commit e6f96c484ce290f2c769d7fdb33783a79db17993.
Revert "sync: Limit logging to particular fence on timeout and error"

This reverts commit 4884dee5b522b176fc030a82bea9a16fc02c76dd.