removing unused class

GUI/Client/CMakeLists.txt

@@ -129,7 +129,6 @@ SET( ParaViewClient_SRCS
   vtkPVJoystickFlyOut.cxx
   vtkPVLODPartDisplay.cxx
   vtkPVLODRenderModuleUI.cxx
-  vtkPVLabel.cxx
   vtkPVLabeledToggle.cxx
   vtkPVLineSourceWidget.cxx
   vtkPVLineWidget.cxx

GUI/Client/vtkPVSource.h

@@ -39,7 +39,6 @@ class vtkPVApplication;
 class vtkPVData;
 class vtkPVInputMenu;
 class vtkPVInputProperty;
-class vtkPVLabel;
 class vtkPVRenderView;
 class vtkPVSourceCollection;
 class vtkPVWidget;