Revert "Sort LDAP user list"

This reverts commit d4dc0177c0.

library/Icinga/Protocol/Ldap/Connection.php

@@ -426,7 +426,7 @@ class Connection
             ldap_control_paged_result($this->ds, 0);
         }
 
-        return $entries;
+        return $entries; // TODO(7693): Sort entries post-processed
     }
 
     protected function cleanupAttributes($attrs)

modules/setup/application/forms/AdminAccountPage.php

@@ -285,9 +285,7 @@ class AdminAccountPage extends Form
         }
 
         try {
-            $users = $backend->listUsers();
-            natsort ($users);
-            return $users;
+            return $backend->listUsers();
         } catch (Exception $e) {
             // No need to handle anything special here. Error means no users found.
             return array();