Remove synchronized block for test only variable am: 219d7f9275 am: 36699cb681

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3377869

Change-Id: I23539e087a335542d87cb13027ec7c7e7a184f82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>