Removed duplicated methods from IdealMolalSoln
Removed duplicated methods from IdealMolalSoln

The class incorrectly had copies of the non-virtual methods 'electricPotential'
and 'setElectricPotential' from the base class ThermoPhase.


imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,imitrichev/cantera