[OnSalePanel] dispatch 로직 수정

Detail Notes :

1. getOnSaleInfo가 App.js 이동하면서 불필요한 로직 삭제

com.twin.app.shoptime/src/views/OnSalePanel/OnSalePanel.jsx

@@ -45,8 +45,6 @@ export default function OnSalePanel() {
       dispatch(
         getOnSaleInfo({ categoryIncFlag: "Y", lgCatCd: currentCategoryCode })
       );
-    } else {
-      dispatch(getOnSaleInfo({ categoryIncFlag: "Y", lgCatCd: "" }));
     }
   }, [currentCategoryCode, dispatch]);