diff --git a/releases/v1.3/bookHelper.py b/releases/v1.3/bookHelper.py
deleted file mode 100644
index 65b25ce..0000000
--- a/releases/v1.3/bookHelper.py
+++ /dev/null
@@ -1,47 +0,0 @@
-import requests
-
-# 解析层级数据
-def parse_hierarchy(hier):
-    parsed = {}
-
-    # 如果没有层级数据，返回空
-    if not hier:
-        return None
-    for h in hier:
-        for ch in h["children"]:
-            parsed[ch["tag_id"]] = {"name": ch["tag_name"], "children": parse_hierarchy(ch["hierarchies"])}
-    return parsed
-
-# 获取课本列表
-def fetch_book_list():
-    # 获取层级数据
-    tagsResp = requests.get("https://s-file-1.ykt.cbern.com.cn/zxx/ndrs/tags/tch_material_tag.json")
-    tagsData = tagsResp.json()
-    parsedHierarchy = parse_hierarchy(tagsData["hierarchies"])
-
-    # 获取课本列表 URL 列表
-    listResp = requests.get("https://s-file-2.ykt.cbern.com.cn/zxx/ndrs/resources/tch_material/version/data_version.json")
-    listData = listResp.json()["urls"].split(",")
-
-    # 获取课本列表
-    for url in listData:
-        bookResp = requests.get(url)
-        bookData = bookResp.json()
-        for i in bookData:
-            # 解析课本层级数据
-            tagPaths = i["tag_paths"][0].split("/")[2:]
-
-            # 如果课本层级数据不在层级数据中，跳过
-            tempHier = parsedHierarchy[i["tag_paths"][0].split("/")[1]]
-            if not tagPaths[0] in tempHier["children"]:
-                continue
-
-            # 分别解析课本层级
-            for p in tagPaths:
-                if tempHier["children"] and tempHier["children"].get(p):
-                    tempHier = tempHier["children"].get(p)
-            if not tempHier["children"]:
-                tempHier["children"] = {}
-            tempHier["children"][i["id"]] = i
-
-    return parsedHierarchy
\ No newline at end of file