Remove C++ Code and Place Conditions in JSON Files

Remove the C++ code checks and instead place the logic in the keyword JSON files. This is a cleaner approach.
Note we force that only one of the keywords is allowed in the deck to avoid confusion on what cut-off is actually being applied.

src/opm/input/eclipse/EclipseState/Grid/EclipseGrid.cpp

@@ -344,14 +344,6 @@ EclipseGrid::EclipseGrid(const Deck& deck, const int * actnum)
             m_pinchGapMode = PinchMode::PinchModeFromString(pinchGapString);
         }
 
-        if (deck.hasKeyword<ParserKeywords::MINPV>() && deck.hasKeyword<ParserKeywords::MINPVFIL>()) {
-            throw std::invalid_argument("Can not have both MINPV and MINPVFIL in the deck.");
-        } else if(deck.hasKeyword<ParserKeywords::MINPV>() && deck.hasKeyword<ParserKeywords::MINPORV>()) {   
-            throw std::invalid_argument("Can not have both MINPV and MINPORV in the deck.");
-        } else if(deck.hasKeyword<ParserKeywords::MINPORV>() && deck.hasKeyword<ParserKeywords::MINPVFIL>()) {   
-            throw std::invalid_argument("Can not have both MINPORV and MINPVFIL in the deck.");
-        }
-
         m_minpvVector.resize(getCartesianSize(), 0.0);
         if (deck.hasKeyword<ParserKeywords::MINPV>()) {
             const auto& record = deck.get<ParserKeywords::MINPV>( ).back().getRecord(0);

src/opm/input/eclipse/share/keywords/000_Eclipse100/M/MINPORV

@@ -3,6 +3,7 @@
   "sections": [
     "GRID"
   ],
+  "prohibits" : ["MINPV", "MINPVFIL"],
   "size": 1,
   "items": [
     {

src/opm/input/eclipse/share/keywords/000_Eclipse100/M/MINPV

@@ -3,6 +3,7 @@
   "sections": [
     "GRID"
   ],
+  "prohibits" : ["MINPORV", "MINPVFIL"],
   "size": 1,
   "items": [
     {

src/opm/input/eclipse/share/keywords/900_OPM/M/MINPVFIL

@@ -3,6 +3,7 @@
   "sections": [
     "GRID"
   ],
+  "prohibits" : ["MINPV", "MINPORV"],
   "size": 1,
   "items": [
     {