removed unusable marks of ptr_container for GCC 3.4.x/4.0.x

[SVN r29460]

status/explicit-failures-markup.xml

@@ -1804,8 +1804,6 @@ for more information.
     <library name="ptr_container">
         <mark-unusable>
             <toolset name="gcc-2.95.3*"/>
-            <toolset name="gcc-3.4.3-linux"/>
-            <toolset name="gcc-4.0.0-linux"/>
             <toolset name="sunpro-5_3-sunos"/>
             <toolset name="tru64cxx65-042"/>
             <toolset name="borland-5_6_4"/>