Refs #9992. Remove unused method from PoldiSpectrumDomainFunction.

Code/Mantid/Framework/SINQ/inc/MantidSINQ/PoldiUtilities/PoldiSpectrumDomainFunction.h

@@ -239,7 +239,6 @@ protected:
       const PoldiInstrumentAdapter_sptr &poldiInstrument);
 
   void beforeDecoratedFunctionSet(const API::IFunction_sptr &fn);
-  void setProfileFunction(const std::string &profileFunctionName);
 
   std::vector<double>
   getChopperSlitOffsets(const PoldiAbstractChopper_sptr &chopper);