Simply deactivate the layout plugin from the WordPress Plugins page.
To remove the importer requires two steps.
STEP 1: Remove the require_once statement on line 1 of the functions.php file.
STEP 2: Then Delete the jedi-apprentice folder from the child theme folder.
If you do not have experience modifying theme files, you should approach this cautiously and prepare yourself. Here is a good article to bring you up to speed: nosegraze.com/edit-functions-php/