Clean up xpickle_worker.py.

Author: serhiy-storchaka

Lib/test/xpickle_worker.py

@@ -6,11 +6,8 @@
 import sys
 
 
-# This allows the xpickle worker to import pickletester.py, which it needs
-# since some of the pickle objects hold references to pickletester.py.
-# Also provides the test library over the platform's native one since
-# pickletester requires some test.support functions (such as os_helper)
-# which are not available in versions below Python 3.10.
+# This allows the xpickle worker to import picklecommon.py, which it needs
+# since some of the pickle objects hold references to picklecommon.py.
 test_mod_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
                                              'picklecommon.py'))
 spec = importlib.util.spec_from_file_location('test.picklecommon', test_mod_path)
@@ -19,61 +16,6 @@
 sys.modules['test.picklecommon'] = test_module
 
 
-# To unpickle certain objects, the structure of the class needs to be known.
-# These classes are mostly copies from pickletester.py.
-
-class Nested:
-    class A:
-        class B:
-            class C:
-                pass
-class C:
-    pass
-
-class D(C):
-    pass
-
-class E(C):
-    pass
-
-class H(object):
-    pass
-
-class K(object):
-    pass
-
-class Subclass(tuple):
-    class Nested(str):
-        pass
-
-class PyMethodsTest:
-    @staticmethod
-    def cheese():
-        pass
-
-    @classmethod
-    def wine(cls):
-        pass
-
-    def biscuits(self):
-        pass
-
-    class Nested:
-        "Nested class"
-        @staticmethod
-        def ketchup():
-            pass
-        @classmethod
-        def maple(cls):
-            pass
-        def pie(self):
-            pass
-
-
-class Recursive:
-    pass
-
-
 in_stream = sys.stdin.buffer
 out_stream = sys.stdout.buffer