Remove the implementation of libaapt2_jni in build file

libaapt2_jni is ready to phase out. build-tools includes libaapt2_jni.
However, there is no usage of libaapt2_jni in AOSP so this patch
removes the implementation of libaapt2_jni and its header files.

Test: make clean; make

Bug: 203475226
Change-Id: I193ff8b5b2326f83f59f2591d2e2392dd75438d3
4 files changed