Remove CHA dependencies for class unloading when JIT is disabled

When a linear alloc is unloaded, remove the corresponding CHA
dependencies to prevent any dangling pointers to ArtMethods.

Bug: 63905544
Bug: 63467744
Test: test-art-host
Change-Id: I6f54c6e774daef1a64c6a02a17eb5f5ab98841fd
3 files changed