Hello,
Thank you for your question on disabling social media links in BoldGrid. You can change those within the Customizer for your site.
Go to Customizer->Menus->Social Media. Once on the right menu page, click on each social media item and it will expand. At the bottom is a 'Remove' link. Click that to remove that specific social media item.
Be sure to 'Save and Publixh' from the Customizer to save any changes you made.
Kindest Regards,
Scott M