removed the not-really-needed test files of the concept check tests

[SVN r8451]

libs/concept_check

@@ -1 +1 @@
-Subproject commit 8537ed2c65d7aed60df49701b78a61e6110836e4
+Subproject commit 41892380320bd95245a5322617e183cede2e0ad2

libs/regrtest.py

@@ -247,8 +247,6 @@ if  program_arg=="*":
 #  compile( "compose/compose1.cpp" )
   compile( "concept_check/concept_check_test.cpp")
   compile( "concept_check/class_concept_check_test.cpp")
-  compile( "concept_check/stl_concept_check.cpp")
-  compile( "concept_check/stl_concept_covering.cpp")
   compile( "concept_check/concept_check_fail_expected.cpp")
   compile( "concept_check/class_concept_check_fail_expected.cpp")
   compile( "functional/function_test.cpp" )