Remove torch_out from onnx export, no point without the export_ fn

Author: rwightman

timm/utils/onnx.py

@@ -78,9 +78,8 @@ def onnx_export(
             export_options=export_options,
         )
         export_output.save(output_file)
-        torch_out = None
     else:
-        torch_out = torch.onnx.export(
+        torch.onnx.export(
             model,
             example_input,
             output_file,
@@ -101,9 +100,5 @@ def onnx_export(
         if check_forward and not training:
             import numpy as np
             onnx_out = onnx_forward(output_file, example_input)
-            if torch_out is not None:
-                np.testing.assert_almost_equal(torch_out.numpy(), onnx_out, decimal=3)
-                np.testing.assert_almost_equal(original_out.numpy(), torch_out.numpy(), decimal=5)
-            else:
-                np.testing.assert_almost_equal(original_out.numpy(), onnx_out, decimal=3)
+            np.testing.assert_almost_equal(original_out.numpy(), onnx_out, decimal=3)