Remove from server?

I am brand new to the Add to Server plugin and have a question regarding removal of images. Does this plugin allow the removal of images from the media library via FTP, as well as the addition of images?

This is the procedure I followed:

1) I got the plugin installed and working properly.
2) I used FTP to upload a batch of images to the server.
3) Then I went to media > add to server and selected the files that I wanted added to the media library.

I believe this process worked and now I am wanting to remove those files that I uploaded from the media library. This must be possible, right?

Any help you can give me will be tremendously appreciated.