remove import added by mistake

compendium-frontend/src/helpers/useData.tsx

 import { useEffect, useMemo, useState } from "react";
 import { Nren, NrenAndYearDatapoint } from "../Schema";
 import { usePreview } from "./usePreview";
-import { cache } from "webpack";
 
 
 function getYearsAndNrens(sourceData: NrenAndYearDatapoint[]) {