Re-enable TestMultithreaded.py test on Linux.

I could not get http://llvm.org/bugs/show_bug.cgi?id=16016)
to fail on my end running 10 times in a row.  Re-enabling
the test.

llvm-svn: 202446

lldb/test/api/multithreaded/TestMultithreaded.py

@@ -47,7 +47,6 @@ class SBBreakpointCallbackCase(TestBase):
 
     @skipIfi386
     @skipIfLinuxClang # buildbot clang version unable to use libstdc++ with c++11
-    @skipIfLinux # llvm.org/pr16016 assertion failure in ProcessPOSIX.cpp.
     def test_sb_api_listener_resume(self):
         """ Test that a process can be resumed from a non-main thread. """
         self.build_and_test('driver.cpp listener_test.cpp test_listener_resume.cpp',