chore(docs): remove Blume config and package.json

blume.config.ts

@@ -1,9 +0,0 @@
-import { defineConfig } from "blume";
-
-export default defineConfig({
-  title: "Prad's LeetCode",
-  description: "Documentation powered by Blume.",
-  navigation: {
-    tabs: [{ label: "Guides", path: "/guides", icon: "plug" }],
-  },
-});