Removed warning

src/Components/CollectionCommentSection.js

@@ -33,6 +33,8 @@ import SignUpModal from './SignUpModal.js';
 import LoginModal from './LoginModal.js';
 import SnackBarComponent from './SnackbarComponent';
 import CircularProgress from '@material-ui/core/CircularProgress';
+import IconButton from '@material-ui/core/IconButton';
+import KeyboardArrowDownIcon from '@material-ui/icons/KeyboardArrowDown';
 
 export default function CollectionCommentSection(props) {
 	const [post_snack_open, setPostSnackOpen] = useState(false);