Revert "Skip model test for vit_h_14 (#7218)"

This reverts commit 9b233d4.

Author: malfet

test/test_models.py

@@ -682,10 +682,6 @@ def test_classification_model(model_fn, dev):
     model_name = model_fn.__name__
     if SKIP_BIG_MODEL and is_skippable(model_name, dev):
         pytest.skip("Skipped to reduce memory usage. Set env var SKIP_BIG_MODEL=0 to enable test for this model")
-    if model_name == "vit_h_14" and dev == "cuda":
-        # TODO: investigate why this fail on CI. It doesn't fail on AWS cluster with CUDA 11.6
-        # (can't test with later versions ATM)
-        pytest.xfail("https://github.com/pytorch/vision/issues/7143")
     kwargs = {**defaults, **_model_params.get(model_name, {})}
     num_classes = kwargs.get("num_classes")
     input_shape = kwargs.pop("input_shape")