Projucer: Remove unused function

extras/Projucer/Source/Application/jucer_MainWindow.cpp

@@ -229,7 +229,6 @@ bool MainWindow::closeCurrentProject (OpenDocumentManager::SaveIfNeeded askUserT
 
     if (auto* pcc = getProjectContentComponent())
     {
-        pcc->saveTreeViewState();
         pcc->saveOpenDocumentList();
         pcc->hideEditor();
     }

extras/Projucer/Source/Project/UI/jucer_ProjectContentComponent.cpp

@@ -149,10 +149,6 @@ void ProjectContentComponent::setProject (Project* newProject)
     }
 }
 
-void ProjectContentComponent::saveTreeViewState()
-{
-}
-
 void ProjectContentComponent::saveOpenDocumentList()
 {
     if (project != nullptr)

extras/Projucer/Source/Project/UI/jucer_ProjectContentComponent.h

@@ -46,7 +46,6 @@ public:
     Project* getProject() const noexcept    { return project; }
     void setProject (Project*);
 
-    void saveTreeViewState();
     void saveOpenDocumentList();
     void reloadLastOpenDocuments();