this FDIST has 3 parameters also in Excel, revert tdf#40835

The UI FDIST is LEGACY.FDIST in ODFF and is the same in Excel. Only the
"real" FDIST has 4 parameters, which is F.DIST in Excel.

Change-Id: I0b926b51a3cc7282a54cce448e46fed6be3c61fa

formula/source/core/api/token.cxx

@@ -1036,7 +1036,6 @@ inline bool MissingConventionOOXML::isRewriteNeeded( OpCode eOp ) const
         case ocPoissonDist:
         case ocNormDist:
         case ocLogNormDist:
-        case ocFDist:
             return true;
         default:
             return false;
@@ -1146,7 +1145,6 @@ void FormulaMissingContext::AddMoreArgs( FormulaTokenArray *pNewArr, const Missi
 
                     case ocGammaDist:
                     case ocNormDist:
-                    case ocFDist:
                         if (mnCurArg == 2)
                         {
                             pNewArr->AddOpCode( ocSep );