We've pushed out an update that removes the 2K launcher.
Please see this 2K Support article for more details, as well as troubleshooting instructions: https://support.2k.com/hc/articles/34845053169939
2K Launcher Removal
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 16502642 · public branch
Steam updated · First observed