--- a/mercurial/revlog.py	Sun Aug 02 01:14:11 2015 +0900
+++ b/mercurial/revlog.py	Sun Aug 02 12:16:19 2015 +0900
@@ -104,7 +104,6 @@
 # 20 bytes: parent 2 nodeid
 # 20 bytes: nodeid
 indexformatv0 = ">4l20s20s20s"
-v0shaoffset = 56
 
 class revlogoldio(object):
     def __init__(self):
@@ -150,7 +149,6 @@
 #  4 bytes: parent 2 rev
 # 32 bytes: nodeid
 indexformatng = ">Qiiiiii20s12x"
-ngshaoffset = 32
 versionformat = ">I"
 
 # corresponds to uncompressed length of indexformatng (2 gigs, 4-byte