In order to edit/remove the copyrights text in the subfooter area, please follow the steps below:
Please go to Dashboard > Appearance > Customize > Subfooter > edit the Text Area in Footer (right) and (left) fields:
Please note that there are three different Sub-footer fields.
1. Text Area in Footer (left)
2. Text Area in Footer (center)
3. Text Area in Footer (right)
You can place text/HTML or any shortcode in this field. If you add only text, please skip step 3, 4 and 5.
You can also use the Vamtam Drag and Drop editor of a post/page text editor to generate shortcode:
Please refer to this guide: Guide to VamTam Drag and Drop Builder / Visual Composer VIP Restaurant Wordpress Theme