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/cmakeprojectmanager/cmakespecificsettingspage.cpp

@@ -31,8 +31,7 @@
 namespace CMakeProjectManager {
 namespace Internal {
 
-CMakeSpecificSettingWidget::CMakeSpecificSettingWidget(QWidget *parent):
-    QWidget(parent)
+CMakeSpecificSettingWidget::CMakeSpecificSettingWidget()
 {
     m_ui.setupUi(this);
     m_ui.newFileAddedCopyToCpliSettingGroup->setId(m_ui.alwaysAskRadio,