Online Overleaf Editor: Clicked the Submit Button by mistake

By mistake I clicked on the "Submit" button provided in the overleaf editor. Now my document shows:

"Manuscript Submitted to ACM"

I have following questions:

1. What I have to do with my document, it was an incomplete document?
2. Will my document be leaked out now?
3. How can I remove the line "Manuscript Submitted to ACM" from my document?

Some body please guide me.

Zulfi.