[react-native-cli] Remove reference to packager.sh

This script was removed, need to remove the reference we had here.

react-native-cli/index.js

@@ -159,10 +159,7 @@ function createProject(name, verbose) {
   var packageJson = {
     name: projectName,
     version: '0.0.1',
-    private: true,
-    scripts: {
-      start: 'node_modules/react-native/packager/packager.sh'
-    }
+    private: true
   };
   fs.writeFileSync(path.join(root, 'package.json'), JSON.stringify(packageJson));
   process.chdir(root);