Android - How can I disable voice commands when double pressing the home button on the Galaxy S 2?

For a non-rooted phone, this is the best I have found:

• Double-tap, select Menu, Settings
• Voice Talk Seetings -> Speak Prompts: uncheck

Now if you double-tap, a short sound will be heard, but you won't hear the "What would you like to do?" anymore.

I have disabled it using App-Freeze on Titanium Backup. This works well, and is entirely reversible, but appears to require both the Pro key (paid) and root.

A possible alternative would be removing it using either the terminal or ADB. The apk in question is /system/app/VoiceToGo.apk (com.vlingo.client.samsung), and my phone hasn't had a problem with it having been disabled. I would recommend backing it up, though, on the off chance.

From an article on WordPress,

1. Install Go Launcher from Google Play.
2. Open the app drawer.
3. Press and hold on the blue voice command icon until it starts shaking.
4. Click on the "X" button and choose uninstall. Follow the instructions.
5. Optionally, you can uninstall Go Launcher.