There is not a Peaceful Mode

Put the summary of the bug you're having here

*What I expected to happen was to see a peacefulmode option
there was not a peacefulmode option

What actually happened was...:
Describe what happened here

Steps to Reproduce:
1.Go to the Options Menu- both in the game and from the main menu
2.Look for Peaceful Mode
3.You Will die from hostile mobs without shelter