Rip out all the u"..." literals and calls to unicode().
diff --git a/Lib/test/testcodec.py b/Lib/test/testcodec.py
index 5da754d..7ac9203 100644
--- a/Lib/test/testcodec.py
+++ b/Lib/test/testcodec.py
@@ -35,10 +35,10 @@
 
 decoding_map = codecs.make_identity_dict(range(256))
 decoding_map.update({
-        0x78: u"abc", # 1-n decoding mapping
+        0x78: "abc", # 1-n decoding mapping
         "abc": 0x0078,# 1-n encoding mapping
         0x01: None,   # decoding mapping to <undefined>
-        0x79: u"",    # decoding mapping to <remove character>
+        0x79: "",    # decoding mapping to <remove character>
 })
 
 ### Encoding Map