vim: remove sh.vim

(cherry picked from commit c97e0804328cbe99ae3ccd6eb9d322884b44ebc4)
vim: remove old syntax files

(cherry picked from commit a8f7d5835b1ecc937dee03c5fd72d7371f844102)

Conflicts:
	.vim/syntax/javascript.vim
vim: remove old indent scripts

(cherry picked from commit 248cf2cd7df965e1fdbd696f17aa4b00380a0626)