How to Hide Everest Backup Admin Menus

function plt_hide_everest_backup_menus() {
	//Hide "Everest Backup".
	remove_menu_page('everest-backup-export');
	//Hide "Everest Backup → Backup".
	remove_submenu_page('everest-backup-export', 'everest-backup-export');
	//Hide "Everest Backup → Restore".
	remove_submenu_page('everest-backup-export', 'everest-backup-import');
	//Hide "Everest Backup → Migration / Clone".
	remove_submenu_page('everest-backup-export', 'everest-backup-migration_clone');
	//Hide "Everest Backup → History".
	remove_submenu_page('everest-backup-export', 'everest-backup-history');
	//Hide "Everest Backup → Logs".
	remove_submenu_page('everest-backup-export', 'everest-backup-logs');
	//Hide "Everest Backup → Settings".
	remove_submenu_page('everest-backup-export', 'everest-backup-settings');
	//Hide "Everest Backup → Addons".
	remove_submenu_page('everest-backup-export', 'everest-backup-addons');
	//Hide "Everest Backup → UPGRADE TO PRO".
	remove_submenu_page('everest-backup-export', 'everest-backup-upgradetopro');
}

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

Where do I put this code?