hide android app from the app drawer

I've installed an app, after installation, the application will have no icon display yet will run services in the background!

How would I achieve this?

i tried to remove

<intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>     

from the androidManifest.xml