gh-108297: Remove test_crashers (#108690)

The test was skipped in 2011 by
commit 89ba56d5fb.

Scripts in Lib/test/crashers/ do not crash on a reliable way. They
rely on undefined behaviors, like state of the stack memory, and so
may or may not crash. It is not worth it to make sure that they crash
in a continious integration, they should be run manually time to time
instead.

Lib/test/test_crashers.py

@@ -1,37 +0,0 @@
-# Tests that the crashers in the Lib/test/crashers directory actually
-# do crash the interpreter as expected
-#
-# If a crasher is fixed, it should be moved elsewhere in the test suite to
-# ensure it continues to work correctly.
-
-import unittest
-import glob
-import os.path
-import test.support
-from test.support.script_helper import assert_python_failure
-
-CRASHER_DIR = os.path.join(os.path.dirname(__file__), "crashers")
-CRASHER_FILES = os.path.join(glob.escape(CRASHER_DIR), "*.py")
-
-infinite_loops = ["infinite_loop_re.py", "nasty_eq_vs_dict.py"]
-
-class CrasherTest(unittest.TestCase):
-
-    @unittest.skip("these tests are too fragile")
-    @test.support.cpython_only
-    def test_crashers_crash(self):
-        for fname in glob.glob(CRASHER_FILES):
-            if os.path.basename(fname) in infinite_loops:
-                continue
-            # Some "crashers" only trigger an exception rather than a
-            # segfault. Consider that an acceptable outcome.
-            if test.support.verbose:
-                print("Checking crasher:", fname)
-            assert_python_failure(fname)
-
-
-def tearDownModule():
-    test.support.reap_children()
-
-if __name__ == "__main__":
-    unittest.main()