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

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

Change-Id: I88ba3a84337fb2bcecf58369d2c3bac5153d58b4