diff: don't link to removed files

It is 'D' for removed, not 'removed'.

rhodecode/templates/changeset/diff_block.html

@@ -15,7 +15,7
         <div class="code-header">
             <div class="changeset_header">
                 <div class="changeset_file">
-                    ${h.link_to_if(change!='removed',h.safe_unicode(path),h.url('files_home',repo_name=c.repo_name,
+                    ${h.link_to_if(change!='D',h.safe_unicode(path),h.url('files_home',repo_name=c.repo_name,
                     revision=cs2,f_path=h.safe_unicode(path)))}
                 </div>
                 <div class="diff-actions">