How to Disable the Launcher on Android
Launcher is an application for Android that acts as your phone's home screen. Instead of the default Android home screen you get when Launcher is not installed, you see a different home screen that can be customized in a variety of ways. If you want to disable Launcher so that it's no longer running your home screen, you can uninstall it from the Android settings menu.
Press the Menu button on your Android phone. Tap the "Settings" option.
Tap "Applications" to open the Application Settings screen.
Select the "Manage Applications" option.
Scroll through your installed applications until you find "Launcher," then tap on it to view its settings.
Press "Uninstall" to uninstall Launcher from your Android device. The Launcher program will no longer serve as your Android phone's home screen.