remove hp_cxx-71_006_tru64 as required.

[SVN r41378]

status/explicit-failures-markup.xml

@@ -29,7 +29,6 @@
     <mark-toolset name="gcc-4.1.3_linux" status="required"/>
     <mark-toolset name="gcc-4.2.1" status="required"/>
     <mark-toolset name="gcc-4.2.1_linux_x86_64" status="required"/>
-    <mark-toolset name="hp_cxx-71_006_tru64" status="required"/>
     <mark-toolset name="intel-linux-9.0" status="required"/>
     <mark-toolset name="intel-vc8-win-10.0" status="required"/>
     <mark-toolset name="msvc-7.1" status="required"/>