chore: remove unused deps

Author: gregberge

next-sitemap.config.js

@@ -12,7 +12,6 @@
     "check-types": "pnpm exec tsc --noEmit"
   },
   "dependencies": {
-    "@mdx-js/loader": "^3.1.0",
     "@mdx-js/react": "^3.1.0",
     "@next/mdx": "^15.2.4",
     "@next/third-parties": "^15.2.4",
@@ -24,7 +23,6 @@
     "@radix-ui/react-tooltip": "^1.1.8",
     "@radix-ui/react-visually-hidden": "^1.1.2",
     "@shikijs/rehype": "^3.2.1",
-    "@types/mdx": "^2.0.13",
     "clsx": "^2.1.1",
     "fast-glob": "^3.3.3",
     "framer-motion": "^12.6.0",
@@ -34,7 +32,6 @@
     "next": "^15.2.4",
     "next-mdx-remote": "^5.0.0",
     "next-plausible": "^3.12.4",
-    "next-sitemap": "^4.2.3",
     "next-themes": "^0.4.6",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
@@ -52,14 +49,14 @@
     "@tailwindcss/postcss": "^4.0.16",
     "@tailwindcss/typography": "^0.5.16",
     "@trivago/prettier-plugin-sort-imports": "^5.2.2",
+    "@types/mdx": "^2.0.13",
     "@types/node": "^22.13.13",
     "@types/react": "^19.0.12",
     "@types/react-dom": "^19.0.4",
     "cypress": "^14.2.0",
     "eslint": "^9.23.0",
     "eslint-config-next": "^15.2.4",
     "postcss": "^8.5.3",
-    "postcss-nesting": "^13.0.1",
     "prettier": "^3.5.3",
     "prettier-plugin-tailwindcss": "^0.6.11",
     "tailwindcss": "^4.0.16",