Fix title OSC showing up in tmux make output

Author: tpope

autoload/dispatch/tmux.vim

@@ -39,7 +39,6 @@ function! dispatch#tmux#make(request) abort
         \ && a:request.format !~# '%\\[er]'
   let session = get(g:, 'tmux_session', '')
   let script = dispatch#isolate(['TMUX', 'TMUX_PANE'],
-        \ dispatch#set_title(a:request),
         \ call('dispatch#prepare_make', [a:request] +
         \ (pipepane ? [a:request.expanded . '; echo $? > ' . a:request.file . '.complete'] : [])))