diff --git a/version0.15/version0.15.1/ast.h b/version0.15/version0.15.1/ast.h
deleted file mode 100644
index 21cb58f..0000000
--- a/version0.15/version0.15.1/ast.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef __AST_H__
-#define __AST_H__
-
-#include "token_type.h"
-#include <stack>
-#include <list>
-#include <cstring>
-
-enum tree_node_type
-{
-	__syntax_tree_begin=128,
-	__error_syntax,
-	__null_statement,
-	__definition,
-	__assignment,
-	__loop,
-	__choose
-};
-
-struct node
-{
-	int type;
-	int line;
-	std::string content;
-	std::list<node> children;
-};
-
-
-#endif