Fix enforce-style CI error: solve empty-body issue raised by mypy 0.990 (#4643)
Fix enforce-style CI error: solve empty-body issue raised by mypy 0.990 (#4643)

* solve empty-body issue raised by mypy 0.990

Signed-off-by: Chun-Wei Chen <3d21e1cad9aa0e4aa10838f859be24690cfc357c@gmail.com>

* fix black

Signed-off-by: Chun-Wei Chen <3d21e1cad9aa0e4aa10838f859be24690cfc357c@gmail.com>

Signed-off-by: Chun-Wei Chen <3d21e1cad9aa0e4aa10838f859be24690cfc357c@gmail.com>
onnx/onnx,onnx/onnx,onnx/onnx,onnx/onnx