Apply suggestion from @StanFromIreland

Author: StanFromIreland

Lib/test/_test_multiprocessing.py

@@ -7146,65 +7146,6 @@ class SemLock(_multiprocessing.SemLock):
         _multiprocessing.sem_unlink(name)
 
 
-@unittest.skipIf(sys.platform != "linux", "Linux only")
-class ForkInThreads(unittest.TestCase):
-
-    def test_fork(self):
-        code = """
-        import os, sys, threading, time
-
-        t = threading.Thread(target=time.sleep, args=(1,), daemon=True)
-        t.start()
-
-        assert threading.active_count() == 2
-
-        pid = os.fork()
-        if pid < 0:
-            print("Fork failed")
-        elif pid == 0:
-            print("In child")
-            sys.exit(0)
-        print("In parent")
-        """
-
-        res = assert_python_ok("-c", code, PYTHONWARNINGS='always')
-        self.assertIn(b'In child', res.out)
-        self.assertIn(b'In parent', res.out)
-        self.assertIn(b'DeprecationWarning', res.err)
-        self.assertIn(b'is multi-threaded, use of fork() may lead to deadlocks in the child', res.err)
-
-        res = assert_python_failure("-c", code, PYTHONWARNINGS='error')
-        self.assertIn(b'DeprecationWarning', res.err)
-        self.assertIn(b'is multi-threaded, use of fork() may lead to deadlocks in the child', res.err)
-
-    def test_forkpty(self):
-        code = """
-        import os, sys, threading, time
-
-        t = threading.Thread(target=time.sleep, args=(1,), daemon=True)
-        t.start()
-
-        assert threading.active_count() == 2
-
-        pid, _ = os.forkpty()
-        if pid < 0:
-            print(f"forkpty failed")
-        elif pid == 0:
-            print(f"In child")
-            sys.exit(0)
-        print(f"In parent")
-        """
-
-        res = assert_python_ok("-c", code, PYTHONWARNINGS='always')
-        self.assertIn(b'In parent', res.out)
-        self.assertIn(b'DeprecationWarning', res.err)
-        self.assertIn(b'is multi-threaded, use of forkpty() may lead to deadlocks in the child', res.err)
-
-        res = assert_python_failure("-c", code, PYTHONWARNINGS='error')
-        self.assertIn(b'DeprecationWarning', res.err)
-        self.assertIn(b'is multi-threaded, use of forkpty() may lead to deadlocks in the child', res.err)
-
-
 @unittest.skipUnless(HAS_SHMEM, "requires multiprocessing.shared_memory")
 class TestSharedMemoryNames(unittest.TestCase):
     def test_that_shared_memory_name_with_colons_has_no_resource_tracker_errors(self):