logcatd: fix up logpersist.cat to filter out signature file

Simple filter for no suffix, or a numerical suffix. toybox
grep did not handle a more robust regex, so we opted for
kiss in order to remove the .id suffix from consideration.

Bug: 30591615
Change-Id: I5b1c929d3e69c1ae39af95ae44a69f7b55e969ed
1 file changed