Similar to how Apple let people remove built-in iOS apps starting with iOS 10, Apple will let people delete built-in watch apps with watchOS 6 (via TechCrunch).
Built-In Watch Apps
Apple’s built-in watch apps include Alarm, Timber, Stopwatch, Remote, Camera Remote, Radio, ECG, Breathe, and watchOS 6’s Noise and Cycle Tracking. Uninstallation is similar to iOS: Tap and hold on an app icon, wait for it to wiggle, then tap the X that appears.
Or, you can open the Apple Watch app on iOS, into the app settings, and turn off the toggle for “Show on Apple Watch.” Some apps can’t be removed though, like Messages and Heart Rate.
TechCrunch notes that this isn’t available in the current watchOS 6 beta, but sources familiar with the plan say it’s coming in the future.
Further Reading:
Last night my watch updated itself to Watch OS 6.2.1 It looks a bit different, I can’t find any description of the new OS. Any one know what kind of pig came in that poke?
Hello Tom, and sorry for the late reply. In case you still want to see updated to the Watch OS, you can access Apple’s support page: https://support.apple.com/en-us/HT210583
Will you be able to reinstall them should you want to do that?