[automerger skipped] Remove unecessary locking to avoid dead lock. am:...

[automerger skipped] Remove unecessary locking to avoid dead lock. am: 93d5117c am: f60011da -s ours am: 04e76f09 am: 6d526df1 -s ours am: c1934526 -s ours

am skip reason: Change-Id I15def5c401811190f0f2ca8d1fa7e44d6387407e with SHA-1 69eb0eb6 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/13319433

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I544fb27f7fb6ea97002c93f7ee38ff654869e13f