chore: remove unused types from SubMenu

Author: QDyanbing

src/SubMenu/index.tsx

@@ -4,7 +4,7 @@ import Overflow from '@rc-component/overflow';
 import warning from '@rc-component/util/lib/warning';
 import SubMenuList from './SubMenuList';
 import { parseChildren } from '../utils/commonUtil';
-import type { MenuInfo, SubMenuType, PopupRender } from '../interface';
+import type { MenuInfo, SubMenuType } from '../interface';
 import MenuContextProvider, { MenuContext } from '../context/MenuContext';
 import useMemoCallback from '../hooks/useMemoCallback';
 import PopupTrigger from './PopupTrigger';