Updated Boost.Graph failure info

[SVN r67721]

status/explicit-failures-markup.xml

@@ -1862,24 +1862,12 @@
             <toolset name="borland-cb2010"/>
             <toolset name="sun-5.9"/>
         </mark-unusable>
-        <mark-expected-failures>
-          <test name="graphviz_test"/>
-          <toolset name="*mingw-4.4*"/>
-          <toolset name="*mingw-4.5*"/>
-          <note author="Jeremiah Willcock" refid="49"/>
-        </mark-expected-failures>
         <mark-expected-failures>
           <test name="grid_graph_cc"/>
           <test name="grid_graph_test"/>
           <toolset name="msvc-7.1"/>
           <note author="Jeremiah Willcock" refid="2"/>
         </mark-expected-failures>
-        <mark-expected-failures>
-          <test name="boykov_kolmogorov_max_flow_test"/>
-          <test name="max_flow_test"/>
-          <toolset name="acc*"/>
-          <note author="Markus Schoepflin" refid="45"/>
-        </mark-expected-failures>
     </library>
 
     <!-- integer -->