This quick tutorial will teach you how to remove the camera icon from the lock screen of your Samsung Galaxy S5. Disabling this option will remove your ability to instantly unlock your phone's camera feature.
Disable Lock Screen Camera Shortcut on the Galaxy S5
Unlock your phone, and go to Settings > Quick Settings > Lock Screen.
In the Swipe options section, simply uncheck the option that reads Camera Shortcut.
Your camera shortcut has now been removed from your lock screen.