please help with Samsung j700
 

could some one please tell me how to remove a shortcut function from a J700 button it is the small round button on the right side of phone just under screen it was preset by the service provider and links to their wap service I would like to reasign it if possible as it is much too easy to hit by accident I have tried the short cuts menu but it seems to only apply to the center navigation buttons

any help would be great thanks