Remove unwanted detection rule

This piece of code was responsible for propagating the domain of
predicate parameters to argument variables. However, this approach
doesn’t seem to be correct, which is why this commit removes it.

src/anthem/IntegerVariableDetection.cpp

@@ -537,34 +537,9 @@ struct DetectIntegerVariablesVisitor
 		return operationResult;
 	}
 
-	static OperationResult visit(ast::Predicate &predicate, ast::Formula &, VariableDomainMap &)
+	static OperationResult visit(ast::Predicate &, ast::Formula &, VariableDomainMap &)
 	{
-		auto operationResult = OperationResult::Unchanged;
-
-		assert(predicate.arguments.size() == predicate.declaration->arity());
-
-		// Propagate integer domains from predicates to variables
-		for (size_t i = 0; i < predicate.arguments.size(); i++)
-		{
-			auto &variableArgument = predicate.arguments[i];
-			auto &parameter = predicate.declaration->parameters[i];
-
-			if (parameter.domain != ast::Domain::Integer)
-				continue;
-
-			if (!variableArgument.is<ast::Variable>())
-				continue;
-
-			auto &variable = variableArgument.get<ast::Variable>();
-
-			if (variable.declaration->domain == ast::Domain::Integer)
-				continue;
-
-			operationResult = OperationResult::Changed;
-			variable.declaration->domain = ast::Domain::Integer;
-		}
-
-		return operationResult;
+		return OperationResult::Unchanged;
 	}
 };