refactor(package): remove obsolete script

Both `angular-loader` and `index-async.html` have been removed in
c4bd23b. There is no need to keep that script around.

Author: gkalpak

package.json

@@ -29,8 +29,6 @@
     "update-webdriver": "webdriver-manager update",
 
     "preprotractor": "npm run update-webdriver",
-    "protractor": "protractor e2e-tests/protractor.conf.js",
-
-    "update-index-async": "node -e \"var fs=require('fs'),indexFile='app/index-async.html',loaderFile='app/bower_components/angular-loader/angular-loader.min.js',loaderText=fs.readFileSync(loaderFile,'utf-8').split(/sourceMappingURL=angular-loader.min.js.map/).join('sourceMappingURL=bower_components/angular-loader/angular-loader.min.js.map'),indexText=fs.readFileSync(indexFile,'utf-8').split(/\\/\\/@@NG_LOADER_START@@[\\s\\S]*\\/\\/@@NG_LOADER_END@@/).join('//@@NG_LOADER_START@@\\n'+loaderText+'    //@@NG_LOADER_END@@');fs.writeFileSync(indexFile,indexText);\""
+    "protractor": "protractor e2e-tests/protractor.conf.js"
   }
 }