some fixes to enable Python bindings scanning

src/lr-wpan/helper/lr-wpan-helper.h

@@ -94,6 +94,9 @@ public:
   int64_t AssignStreams (NetDeviceContainer c, int64_t stream);
 
 private:
+  // Disable implicit constructors
+  LrWpanHelper (LrWpanHelper const &);
+  LrWpanHelper& operator= (LrWpanHelper const &);
   /**
    * \internal
    *

src/lr-wpan/model/lr-wpan-interference-helper.h

@@ -86,6 +86,9 @@ public:
    */
   Ptr<const SpectrumModel> GetSpectrumModel (void) const;
 private:
+  // Disable implicit copy constructors
+  LrWpanInterferenceHelper (LrWpanInterferenceHelper const &);
+  LrWpanInterferenceHelper& operator= (LrWpanInterferenceHelper const &);
   /**
    * The helpers SpectrumModel.
    */

src/lr-wpan/model/lr-wpan-net-device.h

@@ -31,7 +31,6 @@ namespace ns3 {
 
 class LrWpanPhy;
 class LrWpanCsmaCa;
-class SingleModelSpectrumChannel;
 class SpectrumChannel;
 class Node;