Make the COMMITTERS file reflect reality:
Make the COMMITTERS file reflect reality:

Remove Mark Murphy because he explicitly said he wouldn't be working
on Subversion (in fact, I think he asked to be removed, but it was a
long time ago).

Remove Lefty and Matt, who have never committed and don't participate
actively.  We added them early on, when they expressed interest in
Subversion, because everyone who knows them knows they're careful and
would do no harm :-), and also this was before the process of adding
committers was formalized.  But nowadays, the COMMITTERS list is used
for non-code-related things like voting on new commit access, so it's
good to keep it accurate.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion