refactor(footer, header): remove unused components and clean up code

app/(marketing)/_components/site-footer.tsx

@@ -8,7 +8,7 @@ export function SiteFooter() {
   return (
     <Footer
       logo={<AppLogo className="w-[85px] md:w-[95px]" />}
-      description={<Trans i18nKey="marketing:footerDescription" />}
+      description=""
       copyright={
         <Trans
           i18nKey="marketing:copyright"
@@ -19,22 +19,6 @@ export function SiteFooter() {
         />
       }
       sections={[
-        {
-          heading: <Trans i18nKey="marketing:about" />,
-          links: [
-            { href: '/blog', label: <Trans i18nKey="marketing:blog" /> },
-            { href: '/contact', label: <Trans i18nKey="marketing:contact" /> },
-          ],
-        },
-        {
-          heading: <Trans i18nKey="marketing:product" />,
-          links: [
-            {
-              href: '/docs',
-              label: <Trans i18nKey="marketing:documentation" />,
-            },
-          ],
-        },
         {
           heading: <Trans i18nKey="marketing:legal" />,
           links: [