Remove unused QObject parent arguments on options pages

In the new plugin setup scheme they are data members of the
plugin pimpl and never use the parent.

Change-Id: I28fe150393e8159064dcfbd113ce0320af50fd58
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/qmljstools/qmljscodestylesettingspage.cpp

@@ -121,9 +121,7 @@ void QmlJSCodeStylePreferencesWidget::updatePreview()
 
 // ------------------ CppCodeStyleSettingsPage
 
-QmlJSCodeStyleSettingsPage::QmlJSCodeStyleSettingsPage(/*QSharedPointer<CppFileSettings> &settings,*/
-                     QWidget *parent) :
-    Core::IOptionsPage(parent)
+QmlJSCodeStyleSettingsPage::QmlJSCodeStyleSettingsPage()
 {
     setId(Constants::QML_JS_CODE_STYLE_SETTINGS_ID);
     setDisplayName(QCoreApplication::translate("QmlJSTools", Constants::QML_JS_CODE_STYLE_SETTINGS_NAME));