Revert^2 "Carrier text: add LogBuffer debug logs"

Convert some Log.d calls to use LogBuffer

Test: atest CarrierTextManagerTest
Test: manual remove device SIM and toggle airplane mode
Test: adb shell dumpsys activity service com.android.systemui/.SystemUIService CarrierTextManagerLog
Bug: 278254374
Bug: 281706473
Change-Id: I8a6ab2a9d56639c39a0961a30be17e163265da97