Removed optional/test/optional_test.cpp failure markup on MSVC 7.1. The code for swap now uses Boost.Utility.Swap, which has the workaround for this compiler.

[SVN r67308]

status/explicit-failures-markup.xml

@@ -2566,15 +2566,6 @@ for more information.
             <toolset name="gcc-3_3-darwin"/>
             <note author="Fernando Cacciola" refid="2"/>
         </mark-expected-failures>
-        <mark-expected-failures>
-            <test name="optional_test"/>
-            <toolset name="msvc-7.1"/>
-            <note author="Niels Dekker" date="2008-05-12">
-            MSVC 2003 (7.1) does not always do argument-dependent lookup (ADL), when it should.
-            This causes test failures when swapping boost::optional&lt;T&gt;, for
-            T = optional_swap_test::template_whose_default_ctor_should_be_used&lt;char&gt;.
-            </note>
-        </mark-expected-failures>
     </library>
 
     <library name="pool">