Update GeoNodePositioning.h

GeoModelCore/GeoModelKernel/GeoModelKernel/GeoNodePositioning.h

@@ -52,9 +52,8 @@ class GeoNodePositioning {
     GeoTrf::Transform3D accumulateTrfs(GeoVAlignmentStore* store, const AccumlType type) const;
 
     const GeoPlacement* m_node{nullptr};
-    /// Mutex serving dual purpose:
-    ///  1. To protect the absolute position info
-    ///  2. To protect m_daughters container in the derived GeoFullPhysVol
+    /// Mutex for protecting the absolute position info
+
     mutable std::shared_mutex m_mutex;
     /// @brief  Pointer to the transform holding the aboslute transform of the node
     mutable std::unique_ptr<GeoTrf::Transform3D> m_absTransf{nullptr};