You have voice command for apps turned on in the general settings for the phone. Go to Settings -> Language and input -> Voice cmd for apps. Switch that off. If you want to use voice command for apps for some of your other apps, you'll just have to ignore the icon for the camera (or use a third-party camera app).
Current lineup: Galaxy Note 2, MotoActv
Previous smartphones: Galaxy S3, One X, Droid RAZR MAXX, Galaxy Nexus, Rezound, Galaxy Note, iPhone 4S, Droid Bionic, Stratosphere, Droid Charge, Vitality, Droid Incredible 2, Thunderbolt, Palm Pixi Plus, Droid 3, Fascinate, Droid Incredible, Droid Pro, Droid 2 Global, Droid X, Droid, Treo Pro, Touch Pro 2, Touch Pro, Q9m, XV6800, XV6900
Previous tablets: Transformer Pad TF300, Evo View 4G, Transformer Prime, Transformer TF101, Thrive, gTablet