What I expected to happen was...:
When removed the world should disappear.

What actually happened was...:
When remove of the world he remained saved.

Steps to Reproduce:
1. Create a world
2. then when you entered the world then exit it.
3. then click on the two spanner(Setting world).
4. Click on delete
5. then again click delete.

The world should not be damaged and it can be played.