How to Hide Poptics Admin Menus

function plt_hide_poptics_menus() {
	//Hide "Poptics".
	remove_menu_page('poptics');
	//Hide "Poptics → Campaigns".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/');
	//Hide "Poptics → Analytics".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/analytics');
	//Hide "Poptics → Templates".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/templates');
	//Hide "Poptics → Submissions".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/submissions');
	//Hide "Poptics → A/B Testing".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/ab-testing');
	//Hide "Poptics → Integrations".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/integrations');
	//Hide "Poptics → Settings".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/settings');
	//Hide "Poptics → Onboard".
	remove_submenu_page('poptics', 'admin.php?page=poptics#/onboard');
}

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

Where do I put this code?