Merge "Remove obsolete files on preloaded classes." am: 637477eb87 am: a54de89cf0 am: 02b0ec4681 am: e833855ad5

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1885635

Change-Id: I7ed4099a60a32b98ad388e0c2c7f256d8414a517