refactor(vim): make the the status even more basic

site-modules/core/files/vim/plugin/status-line.vim

@@ -1,10 +1,2 @@
 " The most basic status line ever
-function GitStatus()
-    return trim(system("git diff --shortstat 2> /dev/null | awk '{print \"+\"$4\" -\"$6}'"))
-endfunction
-
-function GitBranch()
-    return trim(system("git rev-parse --abbrev-ref HEAD 2> /dev/null || echo 'no-git'"))
-endfunction
-
-set statusline=\ %y%r\ %m%f:%l:%c%=[%{GitBranch()}]\ %{GitStatus()}\ 
+set statusline=\ %y%r\ %m%f:%l:%c%=