删除无用代码，替换消息提示样式

ruoyi-admin/src/main/resources/templates/system/newdev/audit/editAudit.html

@@ -307,7 +307,7 @@
                 <div class="row mt-6">
                     <div class="col-sm-offset-5 col-sm-10" style="display: flex;">
                         <button type="button" class="btn btn-sm btn-primary" @click="approveApplication"><i class="fa fa-check"></i>通 过</button>&nbsp;
-                        <button type="button" class="btn btn-sm btn-primary" @click="showRejectDialog"><i class="fa fa-undo"></i>退 回</button>&nbsp;
+                        <button type="button" class="btn btn-sm btn-danger" @click="showRejectDialog"><i class="fa fa-undo"></i>退 回</button>&nbsp;
                         <button type="button" class="btn btn-sm btn-danger" onclick="closeItem()"><i class="fa fa-reply-all"></i>关 闭
                         </button>
                     </div>