Cleanup dependencies

package.json

@@ -31,7 +31,6 @@
     "got": "^9.6.0",
     "lodash.debounce": "^4.0.8",
     "micro": "^9.3.4",
-    "micro-fork": "^2.0.0",
     "millify": "^3.1.0",
     "react-debounce-render": "^5.0.0",
     "semver": "^6.1.0",
@@ -39,13 +38,10 @@
     "serve-marked": "^2.0.0"
   },
   "devDependencies": {
-    "@mdx-js/mdx": "^1.0.20",
     "@types/got": "^9.4.4",
-    "@zeit/next-mdx": "^1.2.0",
     "@zeit/next-typescript": "^1.1.1",
     "babel-eslint": "^10.0.1",
     "fs-extra": "^8.0.1",
-    "micro-dev": "^3.0.0",
     "next": "^7.0.3",
     "nodemon": "^1.19.1",
     "react": "^16.8.6",