docs: update material-ui example

Author: rakannimer

examples/material-ui/package.json

@@ -3,25 +3,15 @@
   "private": true,
   "version": "2.0.0-rc.41",
   "license": "MIT",
-  "files": [
-    "src/",
-    "doczrc.js",
-    "package.json"
-  ],
   "scripts": {
     "dev": "docz dev",
     "build": "docz build",
-    "serve": "docz serve",
-    "//postinstall": "patch-package"
+    "serve": "docz serve"
   },
   "dependencies": {
     "@material-ui/core": "^4.4.0",
     "docz": "next",
-    "postinstall-postinstall": "^2.0.0",
     "react": "^16.8.6",
     "react-dom": "^16.8.6"
-  },
-  "devDependencies": {
-    "patch-package": "^6.1.2"
   }
 }