Remove jQuery Migrate and add async to jQuery in WordPress

functions.php

// remove jquery migrate
add_filter( 'wp_default_scripts', 'dequeue_jquery_migrate' );

function dequeue_jquery_migrate( &$scripts){
	if(!is_admin()){
		$scripts->remove( 'jquery');
		$scripts->add( 'jquery', false, array( 'jquery-core' ), '1.10.2' );
	}
}


// add async to jquery
add_filter( 'script_loader_tag', function ( $tag, $handle ) {    
    if( is_admin() ) {
        return $tag;
    }

    if ( strpos( $tag, "jquery.js" )) {
    return str_replace( ' src', ' async src', $tag );
	} else {
		return $tag;
	}
}, 10, 2 );