Adding or removing the dump files cause soong to regenerate the ninja files, which takes a few minutes for every product. create_reference_dumps.py makes "findlsdumps" and the lsdumps paths. These targets do not trigger ABI diff. Thus it is not necessary to remove the reference dumps before building new dumps. Test: ./create_reference_dumps.py Bug: 255702405 Change-Id: I4f4a43476d7a9c46d41ef237b846547ed41c7c04