fix: Do not display error msg when no generation can be done

autoload/doge.vim

@@ -1,10 +1,6 @@
 let s:save_cpo = &cpoptions
 set cpoptions&vim
 
-function! s:uppercase(str) abort
-  return substitute(a:str, '\(.*\)', '\U\1\e', 'g')
-endfunction
-
 ""
 " @public
 " Generates documentation based on available patterns in b:doge_patterns.
@@ -16,22 +12,6 @@ function! doge#generate() abort
       endif
       return 1
     endfor
-
-    echo '[DoGe] No patterns did match L' . line('.') . '.'
-    echo '--'
-    echohl WarningMsg
-    echo 'Is this a bug? Use the following link to quickly sent in a bug report for kkoomen/vim-doge:'
-    echohl None
-    let l:issue_title = substitute(s:uppercase(&filetype) . ' expression does not generate comment', '\s\+', '+', 'g')
-    echo printf('https://github.com/kkoomen/vim-doge/issues/new?labels=bug&template=bug_report.md&title=%s', l:issue_title)
-  else
-    echo '[DoGe] b:doge_patterns variable not found for filetype "' . s:uppercase(&filetype) . '".'
-    echo '--'
-    echohl WarningMsg
-    echo 'Should this filetype be supported? Use the following link to quickly sent in a feature request for kkoomen/vim-doge:'
-    echohl None
-    let l:issue_title = substitute('Add support for ' . s:uppercase(&filetype), '\s\+', '+', 'g')
-    echo printf('https://github.com/kkoomen/vim-doge/issues/new?assignees=&labels=enhancement&template=feature_request.md&title=%s', l:issue_title)
   endif
 endfunction