Revert^2 "Add JNI-ids arrays to ClassExt"

This reverts commit d9888496eb1cc5687a2c6e428df62427a800ca14.
This unreverts commit b79c6d4b45

Reason for revert: Fixed issue causing 004 flakes on debuggable
Test: ./test.py --host --debuggable --jit
Bug: 134162467

Change-Id: If0d6483a9c7801b88e5cec1160a5e5cbd2c6b93c
1 file changed