A new Message Menu appears on the right-hand when the touch mode is switched on in Outlook 2013.
Some have found this new menu bar irritating.
To TURN it OFF:
Click on the down arrow on the Quick Access Toolbar (Customise Quick Access Tool Bar) and select touch mode.
This will add a new button to the Quick Access Toolbar. Click on the new button to toggle touch mode to OFF.
The menu should disappear.