Fix in Recur Node declaration

Src/AST/Myc.Ast.pas

@@ -157,7 +157,6 @@ type
     private
         FArguments: TArray<IAstNode>;
         function GetArguments: TArray<IAstNode>;
-        function GetIsTailCall: Boolean;
     public
         constructor Create(const AArguments: TArray<IAstNode>);
         function Accept(const Visitor: IAstVisitor): TDataValue; override;
@@ -472,12 +471,6 @@ begin
     Result := FArguments;
 end;
 
-function TRecurNode.GetIsTailCall: Boolean;
-begin
-    // 'recur' is always a tail call by definition.
-    Result := True;
-end;
-
 { TBlockExpressionNode }
 
 constructor TBlockExpressionNode.Create(const AExpressions: array of IAstNode);