Revert^5 "Hash-based dex cache type array."

For app images, ImageWriter does not add boot image
classes to the app image class table even though it
keeps them in the dex caches. The reason for that is
unknown, the code looks OK.

Bug: 34839984
Bug: 30627598
Bug: 34659969

Also reverts "Improve debugging output for a crash."

This reverts commits
    bfb80d25,
    8dd56fcb.

Test: testrunner.py --host
Change-Id: Ic8db128207c07588c7f11563208ae1e85c8b0e84