Remove extraneous lifecycle scripts

Author: markcellus

package.json

@@ -10,12 +10,9 @@
   "scripts": {
     "test": "karma start karma.conf.js && npm run lint",
     "test-server": "karma start karma.conf.js --single-run=false",
-    "preversion": "npm test",
     "minify": "uglifyjs dist/wait-for-element-transition.js -o dist/wait-for-element-transition.min.js",
     "build": "rm -rf dist/* && rollup -c && npm run minify",
     "banner": "banner-cli dist/*.js",
-    "version": "npm run build && npm run banner",
-    "postversion": "git push && git push --tags",
     "start": "rollup -c --watch",
     "lint": "npm run lint:scripts && npm run lint:format",
     "lint:scripts": "tslint '*.ts'",