[hist] Mark not implemented methods as delete

Author: linev

hist/hist/inc/TGraphSmooth.h

@@ -34,8 +34,8 @@
 class TGraphSmooth: public TNamed {
 
 private:
-   TGraphSmooth(const TGraphSmooth&); // Not implented
-   TGraphSmooth& operator=(const TGraphSmooth&); // Not implented
+   TGraphSmooth(const TGraphSmooth&) = delete;
+   TGraphSmooth& operator=(const TGraphSmooth&) = delete;
 
 protected:
    Int_t       fNin;        ///< Number of input points
@@ -48,7 +48,6 @@ class TGraphSmooth: public TNamed {
 public :
    TGraphSmooth();
    TGraphSmooth(const char *name);
-//      TGraphSmooth(const TGraphSmooth &smoothReg);   //??
    ~TGraphSmooth() override;
 
    TGraph         *Approx(TGraph *grin, Option_t *option="linear", Int_t nout=50, Double_t *xout=nullptr,

hist/hist/inc/TKDE.h

@@ -177,8 +177,8 @@ class TKDE : public TNamed  {
 
 private:
 
-   TKDE(TKDE& kde);           // Disallowed copy constructor
-   TKDE operator=(TKDE& kde); // Disallowed assign operator
+   TKDE(TKDE& kde) = delete;
+   TKDE operator=(TKDE& kde) = delete;
 
    // Kernel function pointer. It is managed by class for internal kernels or externally for user defined kernels
    typedef ROOT::Math::IBaseFunctionOneDim* KernelFunction_Ptr;