diff --git a/Lib/_sitebuiltins.py b/Lib/_sitebuiltins.py
index 84551e3546eb6e..5259a36123ea27 100644
--- a/Lib/_sitebuiltins.py
+++ b/Lib/_sitebuiltins.py
@@ -55,7 +55,6 @@ def __setup(self):
         if not data:
             data = self.__data
         self.__lines = data.split('\n')
-        self.__linecnt = len(self.__lines)
 
     def __repr__(self):
         self.__setup()