This does not permanently remove. Unchecking and stopping from application manager is a temp fix. My magazine manages to enable itself again. Big problem. Samsung needs to allow an uninstall and not force me to root my phone!
If you are one of those who don't like My Magazine shown up on the Home Screen as you swipe the screen to the right, do the following easy steps to remove My Magazine from Home Screen on Galaxy S5:
1. Make sure you are on the Home Screen
2. Press and hold your finger on an empty space
3. Tap the Home screen settings button on the bottom right
4. Unmark the "My Magazine" option to get rid of its updates on the home screen