[ci] update CODEOWNERS (#5063)
[ci] update CODEOWNERS (#5063)

* [ci] update CODEOWNERS

* remove chivee from CODEOWNERS
microsoft/LightGBM,henry0312/LightGBM,henry0312/LightGBM,microsoft/LightGBM,microsoft/LightGBM,microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,henry0312/LightGBM