fix: remove unused condition

Author: kevinkim-ogp

packages/frontend/src/components/AiBuilder/components/IdeaButtons.tsx

@@ -18,7 +18,7 @@ export default function IdeaButtons({ ideas, onClick }: IdeaButtonsProps) {
         Need inspiration? Try one of these:
       </FormLabel>
       <Flex
-        flexDir={isMobile ? 'row' : 'row'}
+        flexDir="row"
         gap={2}
         justifyContent="space-between"
         flexWrap="wrap"