How to Hide Scrollsequence Admin Menus

function plt_hide_scrollsequence_menus() {
	//Hide "Scrollsequence".
	remove_menu_page('scrollsequence-dashboard');
	//Hide "Scrollsequence → Dashboard".
	remove_submenu_page('scrollsequence-dashboard', 'scrollsequence-dashboard');
	//Hide "Scrollsequence → Preview".
	remove_submenu_page('scrollsequence-dashboard', 'scrollsequence-preview');
	//Hide "Scrollsequence → Scrollsequence".
	remove_submenu_page('scrollsequence-dashboard', 'edit.php?post_type=scrollsequence');
	//Hide "Scrollsequence → Add New Scrollsequence".
	remove_submenu_page('scrollsequence-dashboard', 'post-new.php?post_type=scrollsequence');
	//Hide "Scrollsequence → Affiliation".
	remove_submenu_page('scrollsequence-dashboard', 'scrollsequence-affiliation');
	//Hide "Scrollsequence → Contact Us".
	remove_submenu_page('scrollsequence-dashboard', 'scrollsequence-contact');
	//Hide "Scrollsequence → Upgrade".
	remove_submenu_page('scrollsequence-dashboard', 'scrollsequence-pricing');
}

add_action('admin_menu', 'plt_hide_scrollsequence_menus', 1000000000);

Where do I put this code?