Remove declaration of not implemenetd method. Refs #2630.

sim/detectors/bmon/CbmBmonDigitize.h

@@ -52,15 +52,6 @@ public:
   virtual ~CbmBmonDigitize();
 
 
-  /** Create a digi and send it for further processing
-   ** @param address   Unique channel address
-   ** @param time      Absolute time [ns]
-   ** @param adc       Digitised charge [ADC channels]
-   ** @param match    MC Match object
-   **/
-  void CreateDigi(Int_t address, UShort_t channel, Long64_t time, UShort_t adc, const CbmMatch& match);
-
-
   /** @brief Detector system ID
    ** @return kSts
    **/