How to Hide Social Share Buttons by Supsystic Admin Menus

function plt_hide_social_share_buttons_by_supsystic_menus() {
	//Hide "Social Share by Supsystic".
	remove_menu_page('supsystic-social-sharing');
	//Hide "Social Share by Supsystic → Social Share by Supsystic".
	remove_submenu_page('supsystic-social-sharing', 'supsystic-social-sharing');
	//Hide "Social Share by Supsystic → Overview".
	remove_submenu_page('supsystic-social-sharing', 'supsystic-social-sharing&module=overview');
	//Hide "Social Share by Supsystic → New Project".
	remove_submenu_page('supsystic-social-sharing', 'supsystic-social-sharing&module=projects&action=add');
	//Hide "Social Share by Supsystic → Projects".
	remove_submenu_page('supsystic-social-sharing', 'supsystic-social-sharing&module=projects');
}

add_action('admin_menu', 'plt_hide_social_share_buttons_by_supsystic_menus', 11);

Where do I put this code?