diff --git a/simplejson/scanner.py b/simplejson/scanner.py
index 2ce8aa3c2946485ecd43ce4b74bbc36a2bbba5b2_c2ltcGxlanNvbi9zY2FubmVyLnB5..4e86351ff683c88b793e4ce493a695fa00e82779_c2ltcGxlanNvbi9zY2FubmVyLnB5 100644
--- a/simplejson/scanner.py
+++ b/simplejson/scanner.py
@@ -61,7 +61,3 @@
         fn.regex = re.compile(pattern, flags)
         return fn
     return decorator
-
-def InsignificantWhitespace(match, context):
-    return None, None
-pattern(r'\s+')(InsignificantWhitespace)