How to remove the lock screen

I had no lock screen on my X2, as I wanted. I had certainly make the choice to start my X2.
I wanted to test a lock screen (without lock code or whatever, but just with the finger sliding).
And now I don't know how to remove this screen.
I want to get on my X2, when I turn on the screen directly on my launcher.

Here I can only choose an image, not don't put one. :(

Does anyone have any idea?

-KangVIP 211-

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