Fix various issues (mostly Python 2 relics) found by Jacques Ducasse.
diff --git a/Doc/library/email.header.rst b/Doc/library/email.header.rst
index 808f7e5..ff2b484 100644
--- a/Doc/library/email.header.rst
+++ b/Doc/library/email.header.rst
@@ -130,14 +130,10 @@
 
    .. method:: __str__()
 
-      A synonym for :meth:`Header.encode`.  Useful for ``str(aHeader)``.
-
-
-   .. method:: __unicode__()
-
       A helper for :class:`str`'s :func:`encode` method.  Returns the header as
       a Unicode string.
 
+
    .. method:: __eq__(other)
 
       This method allows you to compare two :class:`Header` instances for