removed unused useMemo from prior commit

packages/material-react-table/src/components/head/MRT_TableHeadCellFilterLabel.tsx

@@ -1,4 +1,4 @@
-import { type MouseEvent, useState, useMemo } from 'react';
+import { type MouseEvent, useState } from 'react';
 import Box from '@mui/material/Box';
 import Grow from '@mui/material/Grow';
 import IconButton, { type IconButtonProps } from '@mui/material/IconButton';