code: public function deactivate() {
  		$this->clear_schedule();
  		if ( !is_multisite() || wp_is_large_network() ) {
  			return;
  		}
  
  		$sites = ( array ) get_site_option( $this->args[ 'name' ] . '_sites', array() );
  
  		$sites and $sites = array_diff( $sites, [ get_current_blog_id() ] );
  
  		foreach ( $sites as $site ) {
  			switch_to_blog( $site );
  			$this->clear_schedule();
  		}
  		restore_current_blog();
  
  		delete_site_option( $this->args[ 'name' ] . '_sites' );
  	}
docs: Remove all the cron on deactivation
  
  @return void