Revert "[dynamo] Support delattr on result of torch.compile(module) (pytorch#152741)"

This reverts commit 6c025b5.

Reverted pytorch#152741 on behalf of https://github.com/huydhn due to Discuss with the author to revert and reland this ([comment](pytorch#152740 (comment)))

Author: pytorchmergebot

test/dynamo/test_modules.py

@@ -3047,19 +3047,6 @@ def forward(self, inp):
 
         self.assertEqual(model.x, compiled_model.x)
 
-    def test_delattr_on_compiled_module(self):
-        class Mod(torch.nn.Module):
-            def forward(self, x):
-                return x + 1
-
-        model = Mod()
-        compiled_model = torch.compile(model)
-        compiled_model.foo = 42
-        del compiled_model.foo
-
-        self.assertFalse(hasattr(model, "foo"))
-        self.assertFalse(hasattr(compiled_model, "foo"))
-
     def test_globals_change_in_other_file(self):
         @torch.compile(backend="eager", fullgraph=True)
         def fn(x):

torch/_dynamo/eval_frame.py

@@ -389,15 +389,6 @@ def __setattr__(self, name, val) -> None:
             return super().__setattr__(name, val)
         return setattr(self._orig_mod, name, val)
 
-    def __delattr__(self, name):
-        # This mirrors `__setattr__`
-        if hasattr(type(self), name):
-            return super().__delattr__(name)
-
-        if name in OptimizedModule._opt_mod_attributes:
-            return super().__delattr__(name)
-        return delattr(self._orig_mod, name)
-
     def _call_lazy_check(self, *args, **kwargs):
         if (
             hasattr(self._orig_mod, "_initialize_hook")