Always clear the communication device when call disconnected

Flag: EXEMPT bugfix
Bug: 408211130
Bug: 406836000
Test: manual
Test: atest TelecomUnitTests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:b72d2dfc55dc0f8e000fa070d37c036ae8219823)
Merged-In: I6b31ab8b6eeb39417bbaa2ab9f1b8377f0310fb8
Change-Id: I6b31ab8b6eeb39417bbaa2ab9f1b8377f0310fb8
1 file changed