This is now a part of VS Code CodeAction and can be configured using:
```
"editor.codeActionsOnSave": {
"source.fixAll": true //source.fixAll.eslint if you only want to fix using eslint.
}
```
More on this: Check the changelog for Version 2.0.4
https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint#release-notes