rdbms: Remove stray @ingroup from two file doc blocks

Follows-up 499a1fe497 (I7d057a9438f1b09), which introduced a new one
after having fixed this in various commits [1]. Main reason being
that it adds duplicate entries in doc.wikimedia.org navigation for
the file name in addition to the class it defines.

[1] https://gerrit.wikimedia.org/r/q/message:ingroup+owner:Krinkle

Change-Id: I462cc4f83db5fee850c01fd990d4c8c518cd63e0

includes/libs/rdbms/database/DatabaseFactory.php

@@ -16,7 +16,6 @@
  * http://www.gnu.org/copyleft/gpl.html
  *
  * @file
- * @ingroup Database
  */
 namespace Wikimedia\Rdbms;
 
@@ -29,6 +28,7 @@ use Throwable;
  * Constructs Database objects
  *
  * @since 1.39
+ * @ingroup Database
  */
 class DatabaseFactory {
 

includes/libs/rdbms/loadmonitor/LoadMonitorMySQL.php

@@ -16,7 +16,6 @@
  * http://www.gnu.org/copyleft/gpl.html
  *
  * @file
- * @ingroup Database
  */
 
 namespace Wikimedia\Rdbms;

includes/libs/rdbms/querybuilder/SelectQueryBuilder.php

@@ -3,10 +3,12 @@
 namespace Wikimedia\Rdbms;
 
 /**
- * @stable to extend. Note that none of the methods in this class are stable to override.
+ * Note that none of the methods in this class are stable to override.
  * The goal of extending this class is creating specialized query builders,
  * like {@link \MediaWiki\Page\PageSelectQueryBuilder}
- * @package Wikimedia\Rdbms
+ *
+ * @stable to extend
+ * @ingroup Database
  */
 class SelectQueryBuilder extends JoinGroupBase {