These functions import $wpdb but do not use it.

See #27882.


git-svn-id: https://develop.svn.wordpress.org/trunk@28539 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/general-template.php

@@ -753,7 +753,7 @@ function get_bloginfo( $show = '', $filter = 'raw' ) {
  * @return string|null String on retrieve, null when displaying.
  */
 function wp_title($sep = '»', $display = true, $seplocation = '') {
-	global $wpdb, $wp_locale;
+	global $wp_locale;
 
 	$m = get_query_var('m');
 	$year = get_query_var('year');