mail/mutt: Remove feature patches

• As mentioned in efe2cf37e6 UPDATING and pkg-message to keep mail/mutt inline with upstream removing addtional ports patches.
• Update post-install sed to be more vim make.vim syntax friendly. It is making any # a make comments.

Some of these patches
PR: 272194
Reported by: dereks@lifeofadishwasher.com (maintainer)
Differential Revision: https://reviews.freebsd.org/D40754