Revert "Make skipIf support the not_in function."

[sivachandra]

Summary

This reverts commit 251965377bdfb6227eea42c12a792c059e4e8a4b
as a test marked "skipIf(compiler='gcc')" runs when testing with GCC.

lldb/trunk/packages/Python/lldbsuite/test/lldbtest.py

 # for example,
 # @skipIf, skip for all platform/compiler/arch,
 # @skipIf(compiler='gcc'), skip for gcc on all platform/architecture
 # @skipIf(bugnumber, ["linux"], "gcc", ['>=', '4.9'], ['i386']), skip for gcc>=4.9 on linux with i386
 
 # TODO: refactor current code, to make skipIfxxx functions to call this function
 def skipIf(bugnumber=None, oslist=None, compiler=None, compiler_version=None, archs=None, debug_info=None, swig_version=None, py_version=None):
     def fn(self):
-        oslist_passes = check_list_or_lambda(oslist, self.getPlatform())
-        compiler_passes = check_list_or_lambda(compiler, self.getCompiler()) and self.expectedCompilerVersion(compiler_version)
+        oslist_passes = oslist is None or self.getPlatform() in oslist
+        compiler_passes = compiler is None or (compiler in self.getCompiler() and self.expectedCompilerVersion(compiler_version))
         arch_passes = self.expectedArch(archs)
-        debug_info_passes = check_list_or_lambda(debug_info, self.debug_info)
+        debug_info_passes = debug_info is None or self.debug_info in debug_info
         swig_version_passes = (swig_version is None) or (not hasattr(lldb, 'swig_version')) or (check_expected_version(swig_version[0], swig_version[1], lldb.swig_version))
         py_version_passes = (py_version is None) or check_expected_version(py_version[0], py_version[1], sys.version_info)
 
         return (oslist_passes and
                 compiler_passes and
                 arch_passes and
                 debug_info_passes and
                 swig_version_passes and