Rm unnecessary syntax/filetype thing

I think this also fixed a bug with vim-airline being broken on
initial startup and with rainbow.

after/ftplugin/haskell.vim

@@ -3,10 +3,6 @@ setlocal ts=2 sw=2 expandtab
 "set background=light
 "set guifont=Neep\ Medium\ Semi-Condensed\ 18
 
-syntax on
-filetype plugin indent on
-
-
 " tags
 call CmdAlias('hasktags', '!hasktags -c .<CR>')