fix wrong merge result

Author: lyc8503

Doc/library/http.server.rst

@@ -264,12 +264,6 @@ instantiation, of which this module provides three different variants:
       specifies additional headers to be sent in the response (for
       instance, ``[("Content-Range", "bytes 3-14/42")]``).
 
-      The :attr:`responses` attribute holds the default values for *message*
-      and *explain* that will be used if no value is provided; for unknown codes
-      the default value for both is the string ``???``. The body will be empty if
-      the method is HEAD or the response code is one of the following: :samp:`1{xx}`,
-      ``204 No Content``, ``205 Reset Content``, or ``304 Not Modified``.
-
       .. versionchanged:: 3.4
          The error response includes a Content-Length header.
          Added the *explain* argument.