Revert^2 "JNI: Rewrite locking for synchronized methods."

This reverts commit 02e0eb7eef35b03ae9eed60f02c889a6be400de9.

Reason for revert: Fixed the arm64 UNLOCK_OBJECT_FAST_PATH
macro to use the correct label for one branch to slow path.

Change-Id: I311687e877c54229af1613db2928e47b3ef0b6f2
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: run-gtests.sh
Test: testrunner.py --target --optimizing
Bug: 172332525
32 files changed