fix warnings by deleting assignment operator instead of just making it private.

ObjectTypes/SplatCloud/SplatCloud/SplatCloud.hh

@@ -219,7 +219,7 @@ public:
     virtual void resize( unsigned int _num )              = 0; //!< Resize the data vector.
     virtual void crop( const std::vector<int> &_indices ) = 0; //!< Keep only the elements with given indices in the data vector. The indices have to be valid, sorted and unique.
   private:
-    void operator=( const SplatPropertyInterface & ); //!< Disallow the assign operator. (private and *not* implemented)
+    void operator=( const SplatPropertyInterface & ) = delete;
   };
 
   //----------------
@@ -312,7 +312,7 @@ public:
     virtual inline void resize( unsigned int _num ) override { data_.resize( _num );           } //!< Resize the data vector.
     virtual        void crop( const std::vector<int> &_indices ) override;                       //!< Keep only the elements with given indices in the data vector. The indices have to be valid, sorted and unique.
   private:
-    void operator=( const SplatPropertyT<T> & ); //!< Disallow the assign operator. (private and *not* implemented)
+    void operator=( const SplatPropertyT<T> & ) = delete;
   private:
     std::vector<T> data_; //!< The actual stored data (one element per splat)
   };