misc/vim: add highlighting for delete
misc/vim: add highlighting for delete

R=golang-dev, n13m3y3r
CC=golang-dev
http://codereview.appspot.com/5303050

Committer: Gustavo Niemeyer <beac5f8171fcde5e2ec734cc5d25d03e7362e8de@niemeyer.net>

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go