Paste the following in Additional CSS in Live customizer
.page-id-2 .themonic-social-share { display: none; }
replace page-id-2 with your page id number where you want to hide social icons
How to get Page ID in WordPress?
wordpress/wp-admin/post.php?post=31&action=edit
For eg. Edit the page and in the URL bar you will get a number like post=31
So the final code that you will paste in Additional CSS will be
.page-id-31 .themonic-social-share { display: none; }