<c-h> now behaves the same as <BS>

mean that it will delete the closing parentheses as well

plugin/auto-pairs.vim

@@ -415,6 +415,7 @@ function! AutoPairsInit()
   if g:AutoPairsMapBS
     " Use <C-R> instead of <expr> for issue #14 sometimes press BS output strange words
     execute 'inoremap <buffer> <silent> <BS> <C-R>=AutoPairsDelete()<CR>'
+    execute 'inoremap <buffer> <silent> <C-H> <C-R>=AutoPairsDelete()<CR>'
   end
 
   if g:AutoPairsMapSpace