(REALLY) Eliminate use of `extract()` in `wp_insert_link()`.

See #22400.

Built from https://develop.svn.wordpress.org/trunk@28408


git-svn-id: http://core.svn.wordpress.org/trunk@28235 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/bookmark.php

@@ -149,8 +149,6 @@ function wp_insert_link( $linkdata, $wp_error = false ) {
 	$args = wp_parse_args( $linkdata, $defaults );
 	$r = sanitize_bookmark( $args, 'db' );
 
-	extract( wp_unslash( $linkdata ), EXTR_SKIP );
-
 	$update = false;
 	if ( ! empty( $r['link_id'] ) ) {
 		$update = true;