Remove redundant import regsub.
diff --git a/Lib/htmllib.py b/Lib/htmllib.py
index 840d783..7274290 100644
--- a/Lib/htmllib.py
+++ b/Lib/htmllib.py
@@ -6,7 +6,6 @@
 
 
 import sys
-import regsub
 import string
 from sgmllib import SGMLParser
 from formatter import AS_IS