Fix in Recur Node declaration

Src/AST/Myc.Ast.Evaluator.pas

@@ -269,9 +269,6 @@ var
     i: Integer;
 begin
     // The binder ensures this is only in a tail position.
-    if not Node.IsTailCall then
-        raise EInvalidOperation.Create('Recur has to be a tail call');
-
     SetLength(argValues, Length(Node.Arguments));
     for i := 0 to High(Node.Arguments) do
         argValues[i] := Node.Arguments[i].Accept(Self);