wx.getSystemInfoSync is deprecated.

I use version @visactor/wx-vchart  v2.0.15. But when using in wechat program and interact with charts, it will output this warning:
```
wx.getSystemInfoSync` is deprecated.Please use wx.getSystemSetting/wx.getAppAuthorizeSetting/wx.getDeviceInfo/wx.getWindowInfo/wx.getAppBaseInfo instead.
```