Simplify the code a bit by using system separator
Simplify the code a bit by using system separator

Simplify the code a bit by using system separator instead of checking platform and use different separator for different platforms
qqzwc/XX-Net,zlsun/XX-Net,qqzwc/XX-Net,xyuanmu/XX-Net,xyuanmu/XX-Net,xyuanmu/XX-Net,qqzwc/XX-Net,zlsun/XX-Net,zlsun/XX-Net,zlsun/XX-Net,qqzwc/XX-Net,xyuanmu/XX-Net,xyuanmu/XX-Net,qqzwc/XX-Net,zlsun/XX-Net