Support familyII in the SatfuncInitializer

- Moves saturation function family check from EclipseState to
SatfuncPropertyInitializers
- Add tests in SatfuncPropertyInitializersTests
- Fixes error in the SatfuncPropertyInitializers implementation for
familyII

opm/parser/eclipse/EclipseState/EclipseState.hpp

@@ -153,12 +153,6 @@ namespace Opm {
         const std::map<int, VFPInjTable>& getVFPInjTables() const;
         size_t getNumPhases() const;
 
-        // The saturation function family.
-        // If SWOF and SGOF are specified in the deck it return 1
-        // If SWFN, SGFN and SOF3 are specified in the deck it return 2
-        // If keywords are missing or mixed, an error is given.
-        const size_t getSaturationFunctionFamily() const;
-
         // the unit system used by the deck. note that it is rarely needed to convert
         // units because internally to opm-parser everything is represented by SI
         // units...