Merge "Cleanup obsolete doc build targets" into main am: a445bfed am: b058ee56

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2781371



Change-Id: I933525c8773d5e5aa0972e4c5ed8a449141cbbf1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>