removed tru64 from serialization unusable list

[SVN r26038]

status/explicit-failures-markup.xml

@@ -641,8 +641,6 @@ for more information.
             <toolset name="acc" />
             <toolset name="vacpp" />
             <toolset name="mipspro" />
-            <toolset name="tru64cxx" />
-            <toolset name="tru64cxx65" />
             <note author="Robert Ramey" date="13 Jul 2004" refid="9,17,18"/>
         </mark-unusable>
         <mark-unusable>