Revert "added new flex for rename button"

This reverts commit ca78d881b51a1c07e6da92ca992d5fdac4ebbdd9.

src/server/views/modal/rename.html

@@ -62,11 +62,9 @@
               <input type="hidden" name="path" value="{{ page.path }}">
               <input type="hidden" name="page_id" value="{{ page._id.toString() }}">
               <input type="hidden" name="revision_id" value="{{ page.revision._id.toString() }}">
+              <button type="submit" class="btn btn-primary">Rename</button>
             </div>
           </div>
-          <div class="d-flex justify-content-end">
-            <button type="submit" class="btn btn-primary">Rename</button>
-          </div>
         </div>
 
       </form>