Remove pre and postpublish scripts

Author: jendewalt

package.json

@@ -12,8 +12,6 @@
     "test": "npm run lint &&  mocha --check-leaks -t 5000 -b test/index.js",
     "jsdoc": "./scripts/jsdoc.sh",
     "gh-pages": "./scripts/gh-pages.sh",
-    "prepublish": "npm run build",
-    "postpublish": "./scripts/postpublish.sh"
   },
   "homepage": "http://bookshelfjs.org",
   "repository": {