cleanup import on index

src/pages/index.tsx

@@ -1,8 +1,7 @@
 import { formatDate } from "date-fns";
 import { toZonedTime } from "date-fns-tz";
-import { navigate, PageProps, withPrefix } from "gatsby";
+import { navigate, PageProps } from "gatsby";
 import React, { useEffect } from "react";
-import { Helmet } from "react-helmet";
 
 const IndexPage: React.FC<PageProps<null>> = () => {
   const currentDate = formatDate(