bpo-37531: Skip test_regrtest.test_multiprocessing_timeout() on all platforms (GH-16282)

Author: vstinner

Lib/test/test_regrtest.py

@@ -1151,8 +1151,7 @@ def test_garbage(self):
                                   env_changed=[testname],
                                   fail_env_changed=True)
 
-    @unittest.skipIf(sys.platform == 'win32',
-                     'bpo-37531, bpo-38207: test hangs randomly on Windows')
+    @unittest.skipIf(True, 'bpo-37531, bpo-38207: test hangs randomly')
     def test_multiprocessing_timeout(self):
         code = textwrap.dedent(r"""
             import time