Dmitry

if ( ! function_exists( 'deregister_js' ) ) :
	add_action( 'wp_enqueue_scripts', 'deregister_js' );
	function deregister_js() {
		global $wp_customize;
		if ( isset( $wp_customize ) ) {
			wp_deregister_script( 'jquery' );
		}
	}
endif;