Revert "Carrier text: add LogBuffer debug logs"

Revert submission 23033485

Reason for revert: Probable culprit for b/281706473

Reverted changes: /q/submissionid:23033485
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:8cfb13ccf8f4ef81083f16de603d7c673e67d71e)
Merged-In: I14736a3753419a4bf592536b74d1a025e0384877
Change-Id: I14736a3753419a4bf592536b74d1a025e0384877