Microsoft has started removing certain apps from Windows 11, as evidenced by the latest test version, Build 25987 (Canary Channel), which no longer includes two apps: Windows Maps and Movies and TV. However, users can still install them through the Microsoft Store if they choose to do a clean install.
Unfortunately, Microsoft has not provided an explanation for the removal of these two apps. It is possible that the Movies and TV app has been replaced by a new Media Player app in Windows 11. As for Windows Maps, it may have been removed due to its low usage, as users already have access to Bing Maps through their web browsers.
TLDR: In the latest Windows 11 test version, Microsoft has removed the Windows Maps and Movies and TV apps without providing a reason. It is speculated that the new Media Player app may have replaced Movies and TV, while the low usage of Windows Maps may have led to its removal. Users can still install these apps through the Microsoft Store if desired.