How to Hide Sync Forms with Brilliant Directories Admin Menus

function plt_hide_sync_forms_with_brilliant_directories_menus() {
	//Hide "BD Form Syncs".
	remove_menu_page('edit.php?post_type=brildir-sfwbd');
	//Hide "BD Form Syncs → All Syncs".
	remove_submenu_page('edit.php?post_type=brildir-sfwbd', 'edit.php?post_type=brildir-sfwbd');
	//Hide "BD Form Syncs → Add New Sync".
	remove_submenu_page('edit.php?post_type=brildir-sfwbd', 'post-new.php?post_type=brildir-sfwbd');
	//Hide "BD Form Syncs → API Connection Status".
	remove_submenu_page('edit.php?post_type=brildir-sfwbd', 'brildir_sfwbd-settings');
}

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

Where do I put this code?