Vcs/Text search: Remove a few addAutoReleaseObject uses

Using a QObject parent suffices here.

Change-Id: I4dc5448511d55bf14fbd8f810e91336a49e94094
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/texteditor/basefilefind.cpp

@@ -157,8 +157,8 @@ static void updateComboEntries(QComboBox *combo, bool onTop)
 
 using namespace Internal;
 
-SearchEngine::SearchEngine()
-    : d(new SearchEnginePrivate)
+SearchEngine::SearchEngine(QObject *parent)
+    : QObject(parent), d(new SearchEnginePrivate)
 {
 }