Remove trailing nonsense.

This is related to the following issue: https://github.com/neoclide/coc.nvim/issues/5469

coc-settings.json

@@ -9,11 +9,6 @@
 			"command": "/sbin/texlab",
 			"filetypes": [ "tex","bib","plaintex","context" ]
 		},
-		"bash": {
-			"command": "bash-language-server",
-			"args": ["start"],
-			"filetypes": ["sh","bash"]
-        },
 		"golang": {
 			"command": "gopls",
 			"rootPatterns": ["go.mod"],

init.vim

@@ -30,7 +30,7 @@ filetype plugin on
 " indentation
 set tabstop=4                " tabs only count for 4 spaces
 set shiftwidth=4             " when indenting use 4 spaces
-set expandtab              " use tab characters
+set noexpandtab              " use tab characters
 set autoindent
 
 " view
@@ -58,14 +58,14 @@ function! CheckBackspace() abort
 endfunction
 
 inoremap <silent><expr> <TAB>
-      \ coc#pum#visible() ? coc#pum#next(1) :
+	  \ coc#pum#visible() ? coc#pum#next(1) :
+	  \ CheckBackspace() ? "\<Tab>" :
 	  \ coc#expandableOrJumpable() ? "\<C-r>=coc#snippet#next()\<CR>" :
-      \ CheckBackspace() ? "\<Tab>" :
-      \ coc#refresh()
+	  \ coc#refresh()
 inoremap <silent><expr> <S-TAB>
-      \ coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
-	  \ coc#expandableOrJumpable() ? "\<C-r>=coc#snippet#prev()\<CR>" :
+	  \ coc#pum#visible() ? coc#pum#prev(1) :
 	  \ CheckBackspace() ? "\<S-Tab>" :
+	  \ coc#expandableOrJumpable() ? "\<C-r>=coc#snippet#prev()\<CR>" :
 	  \ coc#refresh()
 let g:coc_disable_startup_warning = 1
 
@@ -99,10 +99,6 @@ nmap <silent><nowait> gy <Plug>(coc-type-definition)
 nmap <silent><nowait> gi <Plug>(coc-implementation)
 nmap <silent><nowait> gr <Plug>(coc-references)
 
-" Temporary!!! Remove after CoC update
-let storage_file = stdpath('data') . '/coc-localstorage'
-let g:coc_node_args = ['--localstorage-file=' . storage_file]
-
 " syntax highlighting
 syntax on
 set background=dark