remove ackmore from vim

More trouble than it's worth. Have learnt some stuff from it though.

.gitmodules

@@ -28,6 +28,3 @@
 [submodule "zsh/oh-my-zsh"]
 	path = zsh/oh-my-zsh
 	url = git://github.com/robbyrussell/oh-my-zsh.git
-[submodule "vim/bundle/ackmore"]
-	path = vim/bundle/ackmore
-	url = git://github.com/jordansissel/vim-ackmore.git