Generate Soong based (system/test_)stubs_current jar

And remove build_android_stubs.mk
Bug: b/70351683

Test: m soong_android_stubs_current
cp out/soong/.intermediates/development/build/soong_android_stubs_current/android_common/combined/soong_android_stubs_current.jar new/ &&
cp out/target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates/classes.jar old/ &&
cd new/; find . -type f -name "*.class" -exec md5sum {} \+ | ( cd old; md5sum -c --quiet )

zipinfo > entries.toc, results are identical.

Change-Id: I24013e20481392e15ef6362c5cc239740531625f
Merged-In: I24013e20481392e15ef6362c5cc239740531625f
3 files changed