remove some useless code in DART
remove some useless code in DART
microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,Allardvm/LightGBM,wxchan/LightGBM,olofer/LightGBM,sightmachine/LightGBM,cbecker/LightGBM,Laurae2/LightGBM,sightmachine/LightGBM,wxchan/LightGBM,olofer/LightGBM,wxchan/LightGBM,henry0312/LightGBM,Allardvm/LightGBM,henry0312/LightGBM,huanzhang12/LightGBM,Allardvm/LightGBM,fstonezst/LightGBM,cbecker/LightGBM,fstonezst/LightGBM,huanzhang12/LightGBM,sightmachine/LightGBM,olofer/LightGBM,sightmachine/LightGBM,Laurae2/LightGBM,henry0312/LightGBM,huanzhang12/lightgbm-gpu,microsoft/LightGBM,wxchan/LightGBM,huanzhang12/lightgbm-gpu,henry0312/LightGBM,huanzhang12/LightGBM,fstonezst/LightGBM,huanzhang12/lightgbm-gpu,huanzhang12/LightGBM,olofer/LightGBM,huanzhang12/lightgbm-gpu,microsoft/LightGBM,huanzhang12/lightgbm-gpu,fstonezst/LightGBM,fstonezst/LightGBM,cbecker/LightGBM,Allardvm/LightGBM,microsoft/LightGBM,huanzhang12/LightGBM,Laurae2/LightGBM,Laurae2/LightGBM,Allardvm/LightGBM,Laurae2/LightGBM,wxchan/LightGBM,olofer/LightGBM,cbecker/LightGBM