vim/git: remove old git commit related stuff

.gitconfig

@@ -155,3 +155,5 @@
 [pull]
     #rebase = true
 	ff = only
+[commit]
+	verbose = true

.vim/ftplugin/git.vim

@@ -1,70 +0,0 @@
-"=============================================================================
-" Copyright:    Copyright © Pierre Habouzit
-"               Permission is hereby granted to use and distribute this code,
-"               with or without modifications, provided that this copyright
-"               notice is copied with it. Like anything else that's free,
-"               bufexplorer.vim is provided *as is* and comes with no
-"               warranty of any kind, either expressed or implied. In no
-"               event will the copyright holder be liable for any damages
-"               resulting from the use of this software.
-" Description:  git-commit(1) helper
-" Maintainer:   Pierre Habouzit <madcoder@debian.org>
-" Last Changed: Mon, 26 Nov 2007 10:06:15 +0100
-" Usage:        This file should live in your ftplugin directory.
-"
-"               The configurations variables are:
-"
-"                 g:git_diff_opts        - options to add to git diff,
-"                                          (default "-C -C")
-"                 g:git_diff_spawn_mode  - use auto-split on commit ?
-"                                          * 1 == hsplit
-"                                          * 2 == vsplit
-"                                          * none else (default)
-"
-"               The default keymaping is:
-"
-"                 <Leader>gd   - view the diff in a hsplit
-"                 <Leader>ghd  - view the diff in a hsplit
-"                 <Leader>gvd  - view the diff in a vsplit
-"========================================================================={{{=
-
-if exists("b:did_ftplugin") | finish | endif
-
-let b:did_ftplugin = 1
-
-setlocal tw=74
-setlocal nowarn nowb
-
-function! Git_diff_windows(vertsplit, auto, opts)
-    if a:vertsplit
-        rightbelow vnew
-    else
-        rightbelow new
-    endif
-    silent! setlocal ft=diff previewwindow bufhidden=delete nobackup noswf nobuflisted nowrap buftype=nofile
-    exe "normal :r!LANG=C git diff --stat -p --cached ".a:opts."\no\<esc>1GddO\<esc>"
-    setlocal nomodifiable
-    noremap <buffer> q :bw<cr>
-    if a:auto
-        redraw!
-        wincmd p
-        redraw!
-    endif
-endfunction
-
-noremap <buffer> <Leader>gd :call Git_diff_windows(0, 0, g:git_diff_opts)<cr>
-noremap <buffer> <Leader>ghd :call Git_diff_windows(0, 0, g:git_diff_opts)<cr>
-noremap <buffer> <Leader>gvd :call Git_diff_windows(1, 0, g:git_diff_opts)<cr>
-
-if !exists("g:git_diff_opts")
-    let g:git_diff_opts = "-C -C"
-endif
-if exists("g:git_diff_spawn_mode")
-    if g:git_diff_spawn_mode == 1
-        call Git_diff_windows(0, 1, g:git_diff_opts)
-    elseif g:git_diff_spawn_mode == 2
-        call Git_diff_windows(1, 1, g:git_diff_opts)
-    endif
-endif
-
-" }}}

.vimrc

@@ -420,8 +420,6 @@ imap <M-S-F1> <Esc><M-S-F1>
 """""""""
 " TOOLS "
 """""""""
-" show git diff when committing
-let g:git_diff_spawn_mode = 1
 
 " zf#j creates a fold from the cursor down # lines.
 "zf/string creates a fold from the cursor to string .