remove b key from vimbox

vim/checklist.vim

@@ -1,10 +1,9 @@
 function! Box_clear ()
     mapclear!
     map <space> :<C-U>call Flip_box()<CR>j^
-    map b i[ ] <ESC>hhh
     map! <C-b> [ ] 
     set laststatus=2
-    set statusline=%f\ %=\ \[ChkB[x]\ spc,b]\ (%v,%l)
+    set statusline=%f\ %=\ ([x]\ spc,^b)\ (%v,%l)
     hi StatusLine ctermfg=cyan ctermbg=black
 endfunction
 call Box_clear()

vim/vimbox

@@ -1,7 +1,7 @@
 #!/bin/bash
 function helpexit() {
     echo Edit a file with check list mod of vim.
-    echo "Key 'b' inserts a checkbox, space toggles the box."
+    echo "space toggles the box."
     echo "Ctrl-b in editing mode inserts a checkbox."
     echo All switches are passed on to vim.
     exit