[dynamo, test] remove skip for unhandled exception test (pytorch#123876)

This test might no longer segfault in CI due to changes to how we allocate and free shadow frames in dynamo.

Pull Request resolved: pytorch#123876
Approved by: https://github.com/jansel

test/dynamo/test_misc.py

@@ -7052,7 +7052,6 @@ def f(a):
         except RuntimeError as e:
             self.assertIn("smoge", traceback.format_exc())
 
-    @unittest.skip("Not clear why this test would trigger a segfault.")
     def test_unhandled_exception_in_dynamo2(self):
         # segfaults in python 3.11 if shadow frame is freed improperly
         from torch.testing import make_tensor