remove test for deprecated import

Author: ferrine

tests/graph/rewriting/test_basic.py

@@ -1,5 +1,3 @@
-import sys
-
 import pytest
 
 from pytensor.configdefaults import config
@@ -837,15 +835,4 @@ def perform(self, *args):
 def test_deprecations():
     """Make sure we can import deprecated classes from current and deprecated modules."""
     with pytest.deprecated_call():
-        from pytensor.graph.rewriting.basic import GlobalOptimizer
-
-    with pytest.deprecated_call():
-        from pytensor.graph.opt import (  # noqa: F401 F811
-            GlobalOptimizer,
-            LocalOptimizer,
-        )
-
-    del sys.modules["pytensor.graph.opt"]
-
-    with pytest.deprecated_call():
-        from pytensor.graph.opt import GraphRewriter  # noqa: F401
+        pass