Privacy: Remove unused $wpdb global in `WP_Privacy_Requests_Table::…

…prepare_items()`.

Props david.binda.
Fixes #48178.

git-svn-id: https://develop.svn.wordpress.org/trunk@46374 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-privacy-requests-table.php

@@ -267,8 +267,6 @@ public function process_bulk_action() {
 	 * @since 5.1.0 Added support for column sorting.
 	 */
 	public function prepare_items() {
-		global $wpdb;
-
 		$this->items    = array();
 		$posts_per_page = $this->get_items_per_page( $this->request_type . '_requests_per_page' );
 		$args           = array(