Remove temporary storage_file.

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

init.vim

@@ -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