You can use this and call it with some hooks provided by the extension
// Unload default styles loaded by the plugin
wp_deregister_style( 'rwmb-group' );
wp_deregister_style( 'rwmb-tabs' );
wp_deregister_style( 'rwmb-columns' );
wp_deregister_style( 'mb-tooltip' );
// Unlaod default scripts loaded by the plugin
wp_deregister_script( 'rwmb-group' );
wp_deregister_script( 'mb-show-hide' );
wp_deregister_script( 'rwmb-tabs' );
wp_deregister_script( 'mb-tooltip' );