Merge "Revert "Add bootclasspath_fragments to platform-bootclasspath."" into sc-dev am: 689f1582 am: 4a2f187e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14717693

Change-Id: I31d062592fa1c51076710fb9b9b1b38951413972