QMakeProjectManager: Some code shuffling

In preparation of moving the .pro editor over to new
editor construction scheme.

Change-Id: I429683c523e22bf874e25528eb7d9c13c7989628
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

src/plugins/qmakeprojectmanager/qmakeprojectmanagerplugin.h

@@ -49,13 +49,10 @@ namespace Utils { class ParameterAction; }
 namespace QmakeProjectManager {
 
 class QmakeManager;
-class QtVersionManager;
 class QmakeProject;
 
 namespace Internal {
 
-class ProFileEditorFactory;
-
 class QmakeProjectManagerPlugin : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
@@ -82,7 +79,6 @@ private slots:
 
 private:
     ProjectExplorer::ProjectExplorerPlugin *m_projectExplorer;
-    ProFileEditorFactory *m_proFileEditorFactory;
     QmakeManager *m_qmakeProjectManager;
     QmakeProject *m_previousStartupProject;
     ProjectExplorer::Target *m_previousTarget;