Remove obsolete code from `WP_Users_List_Table::get_sortable_columns().

Sorting by post count was disabled in [17024].

Props jdgrimes.
See #15861.
Built from https://develop.svn.wordpress.org/trunk@35110


git-svn-id: http://core.svn.wordpress.org/trunk@35075 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-users-list-table.php

@@ -333,9 +333,6 @@ class WP_Users_List_Table extends WP_List_Table {
 			'email'    => 'email',
 		);
 
-		if ( $this->is_site_users )
-			unset( $c['posts'] );
-
 		return $c;
 	}
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-35109';
+$wp_version = '4.4-alpha-35110';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.