Remove examples from workspace

Author: pomber

package.json

@@ -3,7 +3,6 @@
   "workspaces": {
     "packages": [
       "packages/mdx",
-      "examples/*",
       "playground",
       "site"
     ]
@@ -15,8 +14,7 @@
     "build:playground": "lerna run --stream --scope playground build",
     "test": "lerna run --stream test",
     "dev": "lerna run --stream --scope @*/mdx dev",
-    "release": "auto shipit",
-    "postinstall": "yarn build:lib"
+    "release": "auto shipit"
   },
   "devDependencies": {
     "auto": "^10.18.7",