Update email.message.rst

Author: ZeroIntensity

Doc/library/email.message.rst

@@ -612,13 +612,6 @@ message objects.
       *content_manager* is not specified, use the ``content_manager`` specified
       by the current :mod:`~email.policy`.
 
-      Note that this method will append a newline character to the end of the
-      content, if it wasn't passed already. For example, the following are equivalent ::
-
-         msg = EmailMessage()
-         msg.set_content("hello")
-         msg.set_content("hello\n")
-
 
    .. method:: make_related(boundary=None)