As stated in the moving from 3 to 4 guide
In version 4 we deprecated the batch classes in Java actions. The reason for this is that regular creates, deletes and commits are just as fast now and the batch classes added no additional functionality. Everything works just as well in a microflow now. You can simply retrieve a number of objects with a limit and offset, change them and commit them all, and repeat this as often as necessary.
Most likely they'll be removed in 5.0 but that's not set in stone.