well, we're still not sure whether you're trying to remove an "old-style" EVRSI.SYS type file – or a "new-style" .LIC type file ...
be ESPECIALLY careful if the "bogus" activation – AND your "good" activation – BOTH use the EVRSI.SYS format ...
because ...
in most cases, there will only be ONE file named EVRSI.SYS on your computer – and ALL of the activations will be stored in that ONE file ...
worse case, you might delete the "bogus" information, but in doing so, you might also wipe out your legitimate information too ...
more specifically, with the old system there was NOT one activation file for RSLogix500 – and a SEPARATE activation file for RSLogix5 (just as examples) ...
good luck with your project ...