éliminateur the Windows out of the screen

[louisg35422114]

I want to eliminate the window in the screen.

Thank you in advance

[ClayUUID]

I want you to be better at asking questions.

[louisg35422114]

I will try to give a better explanation of my problem. Excuse my English, I'm French and new to Animate CC.
When I transfer an image from Photoshop to the screen in Animate I have the file with a black outline square. I would like to cancel this part of my image. I hope I made myself understood and thank you again.