You can remove your ad from publication in two ways:

1. Make your ad inactive. Click on the "Active Ad" button next to your ad and select "Passive Ad" from the dropdown menu. This will make your ad inactive.

2.To not delete your ad completely, click on the "Delete" button on the right side of your ad.

Then, refresh the page. If you want to withdraw your ad and republish it later, click on the "Undo" button. If you want to delete it completely, click on the "Move to Trash" button.