Merge "Revert "Add separated thread and handler for IwlanCarrierConfigChangeListener"" into main am: 30fed8497f am: cf8c5dd5ed am: f34db09789 am: 516956044d

Original change: https://android-review.googlesource.com/c/platform/packages/services/Iwlan/+/2711716

Change-Id: Iabd8458d7cca99d8d7cb64ffd25b02af6f56198e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>