removed markup for a fixed failure of multi_index on vacpp

[SVN r40934]

status/explicit-failures-markup.xml

@@ -2207,13 +2207,6 @@ for more information.
               stage as of this writing.)
             </note>
         </mark-expected-failures>
-        <mark-expected-failures>
-            <test name="test_serialization"/>
-            <toolset name="vacpp"/>
-            <note author="J. L&#195;&#179;pez" date="07 Jul 2005">
-              Boost.Serialization is not supported on this platform.
-            </note>
-        </mark-expected-failures>
         <mark-expected-failures>
             <test name="test_serialization"/>
             <toolset name="hp_cxx-65*"/>