Remove check_v2_dataset_warnings.py which is failing (#7280)

.github/workflows/test-linux-cpu.yml

@@ -55,9 +55,3 @@ jobs:
         # Run Tests
         python3 -m torch.utils.collect_env
         python3 -m pytest --junitxml=test-results/junit.xml -v --durations 20
-
-        # Specific test for warnings on "from torchvision.datasets import wrap_dataset_for_transforms_v2"
-        # We keep them separate to avoid any side effects due to warnings / imports.
-        # TODO: Remove this and add proper tests (possibly using a sub-process solution as described
-        # in https://github.com/pytorch/vision/pull/7269).
-        python3 -m pytest -v test/check_v2_dataset_warnings.py

test/check_v2_dataset_warnings.py

-import pytest
-
-
-def test_warns_if_imported_from_datasets(mocker):
-    mocker.patch("torchvision._WARN_ABOUT_BETA_TRANSFORMS", return_value=True)
-
-    import torchvision
-
-    with pytest.warns(UserWarning, match=torchvision._BETA_TRANSFORMS_WARNING):
-        from torchvision.datasets import wrap_dataset_for_transforms_v2
-
-        assert callable(wrap_dataset_for_transforms_v2)
-
-
-@pytest.mark.filterwarnings("error")
-def test_no_warns_if_imported_from_datasets():
-    from torchvision.datasets import wrap_dataset_for_transforms_v2
-
-    assert callable(wrap_dataset_for_transforms_v2)