skip invalid test case for helios pipeline (#13218)

* skip invalid test case for helio pipeline

Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com>

* update skip reason

Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com>

---------

Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com>

Author: kaixuanliu

tests/pipelines/helios/test_helios.py

@@ -139,9 +139,9 @@ def test_inference(self):
         generated_slice = torch.cat([generated_slice[:8], generated_slice[-8:]])
         self.assertTrue(torch.allclose(generated_slice, expected_slice, atol=1e-3))
 
-    # Override to set a more lenient max diff threshold.
+    @unittest.skip("Helios uses a lot of mixed precision internally, which is not suitable for this test case")
     def test_save_load_float16(self):
-        super().test_save_load_float16(expected_max_diff=0.03)
+        pass
 
     @unittest.skip("Test not supported")
     def test_attention_slicing_forward_pass(self):