My friends

Finally got the solution.

Go to your file explorer and enter this path: /modules/mod_AutsonSlideShow/tmpl/default.php
Edit the file and go to line 563 (on my case).
You should see this amount of code:

Delete this code. If you don’t feel confident to do it you can create a copy of the original file in case in goes wrong.

Know, go to the last line of the file and delete this tag:

By A Web Design

Save it, and enjoy.
Hope it was usefull.