Remove aidl_mapping module type am: 5f0103bbb1

Original change: https://android-review.googlesource.com/c/platform/system/tools/aidl/+/2452205

Change-Id: Icc920a5c6ab290b9ddb11edfd82db458877febdd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>