Disney is not getting rid of the reservations for Galaxy’s Edge, well, at least not entirely. Beginning June 24, 2019, once you scan your ticket, you are free to make a reservation for Batuu, Savi’s Workshop, and Oga’s Cantina. Like all reservations, there will be a return time (if available), and you can do it on the My Disney App or go to a Fast Pass Kiosk (Haunted Mansion, Indiana Jones, Space Mountain, Splash Mountain, or Matterhorn Bobsleds) to make one. When you are making travel plans to visit the planet Batuu, you can create a boarding group for you and your party.
To keep it enjoyable for everyone I think this a smart idea so that small planet does not get overloaded with travelers.