Silence warnings under -3 triggered by wsgiref.
diff --git a/Lib/wsgiref/headers.py b/Lib/wsgiref/headers.py
index 016eb86..3169acf 100644
--- a/Lib/wsgiref/headers.py
+++ b/Lib/wsgiref/headers.py
@@ -63,7 +63,7 @@
         Does *not* raise an exception if the header is missing.
         """
         name = name.lower()
-        self._headers[:] = [kv for kv in self._headers if kv[0].lower()<>name]
+        self._headers[:] = [kv for kv in self._headers if kv[0].lower() != name]
 
     def __getitem__(self,name):
         """Get the first header value for 'name'
@@ -142,7 +142,7 @@
         return self._headers[:]
 
     def __repr__(self):
-        return "Headers(%s)" % `self._headers`
+        return "Headers(%r)" % self._headers
 
     def __str__(self):
         """str() returns the formatted headers, complete with end line,