Remove support for _template snippets

autoload/snippet.vim

@@ -1,16 +0,0 @@
-" Description: Expand snippet on file creation.
-
-" Attempt to expand the _template snippet if this is a new file.
-" https://noahfrederick.com/log/vim-templates-with-ultisnips-and-projectionist
-function! snippet#template() abort
-  " Return if non-empty buffer or file exists.
-  if !(line('$') == 1 && getline('$') ==# '') || filereadable(expand('%'))
-    return
-  endif
-  " Attempt to expand the _template snippet.
-  execute "normal! i_template\<C-r>=UltiSnips#ExpandSnippet()\<CR>"
-  if g:ulti_expand_res == 0
-    " Expansions failed, undo insert.
-    silent! undo
-  endif
-endfunction