Fix Unity build conflict: remove duplicate PdmObjectCollection from cafPdmObjectGroup

Fwk/AppFwk/cafProjectDataModel/cafPdmObjectGroup.cpp

@@ -44,22 +44,4 @@ void PdmObjectGroup::addObject( PdmObjectHandle* obj )
     objects.push_back( obj );
 }
 
-CAF_PDM_SOURCE_INIT( PdmObjectCollection, "PdmObjectCollection" );
-
-//--------------------------------------------------------------------------------------------------
-///
-//--------------------------------------------------------------------------------------------------
-PdmObjectCollection::PdmObjectCollection()
-{
-    CAF_PDM_InitObject( "PdmObjectCollection" );
-    CAF_PDM_InitFieldNoDefault( &objects, "PdmObjects", "", "", "", "" )
-}
-
-//--------------------------------------------------------------------------------------------------
-///
-//--------------------------------------------------------------------------------------------------
-PdmObjectCollection::~PdmObjectCollection()
-{
-}
-
 } // End of namespace caf

Fwk/AppFwk/cafProjectDataModel/cafPdmObjectGroup.h

@@ -64,18 +64,4 @@ void PdmObjectGroup::createCopyByType( std::vector<PdmPointer<T>>* copyOfTypedOb
     }
 }
 
-//==================================================================================================
-/// The PdmObjectCollection serves as a container of unknown PdmObjects stored in a PdmChildArrayField
-//==================================================================================================
-class PdmObjectCollection : public PdmObject
-{
-    CAF_PDM_HEADER_INIT;
-
-public:
-    PdmObjectCollection();
-    ~PdmObjectCollection() override;
-
-    caf::PdmChildArrayField<PdmObjectHandle*> objects;
-};
-
 } // End of namespace caf

Fwk/AppFwk/cafTests/cafTestApplication/MainWindow.h

@@ -12,7 +12,7 @@ class QLabel;
 
 namespace caf
 {
-class PdmObjectCollection;
+class PdmObjectGroup;
 class PdmObjectHandle;
 class UiTreeModelPdm;
 class PdmUiPropertyView;

Fwk/AppFwk/cafTests/cafTestCvfApplication/MainWindow.h

@@ -11,7 +11,7 @@ class TapProject;
 
 namespace caf
 {
-class PdmObjectCollection;
+class PdmObjectGroup;
 class PdmObjectHandle;
 class UiTreeModelPdm;
 class PdmUiPropertyView;