removed git status - strange behaviour on raspi

.vimrc

 highlight InsertColor ctermbg=14 ctermfg=0
 highlight VisualColor ctermbg=9 ctermfg=0
 highlight CommandColor ctermbg=15 ctermfg=0
-highlight GitColor ctermbg=0 ctermfg=7
 highlight FilenameColor ctermbg=10 ctermfg=0
 highlight RightColor ctermbg=8 ctermfg=15
 
 set statusline+=%#VisualColor#%{(mode()=='v')?'\ \ VISUAL\ \ ':''}
 set statusline+=%#CommandColor#%{(mode()=='c')?'\ \ COMMAND\ ':''}
 
-function! GitBranch()
-  return system("git rev-parse --abbrev-ref HEAD 2>/dev/null | tr -d '\n'")
-endfunction
-function! StatuslineGit()
-  let l:branchname = GitBranch()
-  return strlen(l:branchname) > 0?'  '.l:branchname.' ':''
-endfunction
-
-set statusline+=%#GitColor#                                   " Statusline format PmenuSel
-set statusline+=%{StatuslineGit()}                            " Git status
 set statusline+=%#FilenameColor#                              " Statusline format NormalColor
 set statusline+=\ %f                                          " Filename
 set statusline+=\ %m                                          " Modified token