Fix: remove old Giscus div from Footer.tsx

Also removed a pesky `<hr>` from the bottom of the homepage, as Quartz places a `<hr>` after the body already.

Author: MasssiveJuice08

Diff for: content/index.md

@@ -72,5 +72,3 @@ An outline of the various tools used for Morrowind modding, organized by categor
 ## [[contributing/index|Contributing]]
 
 * [[how-to-contribute|How to Contribute]]
-
----

Diff for: quartz/components/Footer.tsx

@@ -13,7 +13,6 @@ export default ((opts?: Options) => {
     const links = opts?.links ?? []
     return (
       <footer class={`${displayClass ?? ""}`}>
-        <div class="giscus" style={{ marginTop: "5rem" }}></div>
         <hr />
         <p>
           {i18n(cfg.locale).components.footer.createdWith}{" "}