Log in to your WP Admin panel.
Navigate to Divi>Theme Customizer.
You can do this from the Admin Panel menu, or also from the front using the editing bar (see images).
Admin panel (back end):
Editing bar (front end):
Click on the “Mobile Styles” option.
Now click on the “Mobile Menu” option.
Check the option “HIDE LOGO IMAGE”, and click “Save & Publish”.