Revert "ART: Use the bitstring type check for AOT app compilation."

Test failures:
http://build.chromium.org/p/client.art/builders/fugu-debug/builds/4875

01-25 02:05:28.357 23732 23732 F /data/local/tmp/system/bin/../bin/dalvikvm: quick_throw_entrypoints.cc:132] Check failed: !dest_type->IsAssignableFrom(src_type) 


This reverts commit 718e8319.

Change-Id: I022f88cd81ae99143e5670ae29eae326ecc83cc2