Revert "ART: Simple structural class check"

This reverts commit fd9eb392.

Remove the simple structural check. Its naive expectations for
resolution have been wrong since we introduced compiling APKs with
a classpath for shared libraries and have never been updated.

Bug: 62857870
Test: m test-art-host
Change-Id: I4a91e9b80b035b493294d0cac029dbac2d9d3bbe