DelimitMate whitelist -> blacklist
delimitMate_expand_cr on. :help delimitMate for details.
Remove obsolete delimiter snippets

I added these back originally because I thought that they might be
useful seeing as delimitMate doesn't have an option that includes the
trailing semicolon. I'm removing them now since I don't plan to continue
putting spaces in front of parens and without a leading spaces these
snippets don't expand.