Merge "Delete platform mapping specific bp2build code" am: 141dcbb6 am: 9bdecbed

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2517837



Change-Id: I72635ea4285b4b315131525af79d8032172915fc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>