chore: drop Quartz GitHub/Discord footer links, add posts link to landing tagline

Author: avyukd

content/index.md

@@ -4,4 +4,4 @@ cssclasses:
   - graph-landing
 ---
 
-A public journal and knowledge graph. Click any node, or pick a date.
+A public journal and knowledge graph. Click any node, pick a date, or explore [posts](/posts) directly.

quartz.layout.ts

@@ -6,12 +6,7 @@ export const sharedPageComponents: SharedLayout = {
   head: Component.Head(),
   header: [],
   afterBody: [Component.Backlinks()],
-  footer: Component.Footer({
-    links: {
-      GitHub: "https://github.com/jackyzha0/quartz",
-      "Discord Community": "https://discord.gg/cRFFHYye7t",
-    },
-  }),
+  footer: Component.Footer({ links: {} }),
 }
 
 // components for pages that display a single page (e.g. a single note)