Disable ABI dumping for hwasan builds.

abidw doesn't currently handle top-byte-ignore correctly. Disable ABI
dumping for those configs while we wait for a fix. We'll still have
ABI checking coverage from non-hwasan builds.

Bug: http://b/190554910
Test: treehugger
Change-Id: I0e29979f8c212c43e0d1beea737abcd7fd0119d7