Yes, you can. Click on the Strategies button and open the Strategies window. Click on the folder with the subfolders that you want to delete. Click on the lock icon on the Delete button, unlock it and then click. The MoonBot terminal will issue a notification “Are you sure to delete these folders: …”. Click Yes to confirm the deletion.
If there are strategies in the folder or subfolders that have ticks set or are currently activated, then when you try to delete a folder with subfolders, the MoonBot terminal will display a notification “There are active strategied in folders to be deleted, please uncheck and stop them first!”. If you are sure that you want to continue deleting, then uncheck all the strategies in the folders and subfolders to be deleted, deactivate them, and then repeat the deletion procedure.