Revert "Upgrade to kotlinc v1.5.0" am: 4d583b8478 am: 3ee194938f am: 5846cd11ce am: a68e3f5c48

Original change: https://android-review.googlesource.com/c/platform/external/kotlinc/+/1705748

Change-Id: I948187ab8606b5144eac8caa6b12a5eefe06ad81