fix：'表单设计弹窗返回按钮隐藏'

src/pages/bsmanager/base/tablemanager/filedConfig/filedConfig.jsx

@@ -464,7 +464,7 @@ const AddModal = props => {
       <Spin tip="loading..." spinning={treeLoading}>
         <div className={styles.containerBox}>
           <div className={styles.config}>
-            <ArrowLeftOutlined onClick={back} className={styles.goBack} />
+            {/* <ArrowLeftOutlined onClick={back} className={styles.goBack} /> */}
             <div className={styles.title}> 展示名称 【{formName}】</div>
             <div style={{ display: 'flex', justifyContent: 'flex-end' }}>
               {/* <div style={{ lineHeight: '32px', marginRight: '5px' }}>快速切换表:</div>