Hello ChaoShaoWei, welcome to the Microsoft community, I'll be happy to help you today;
I understand you want to remove some keyboard layouts in Windows 11;
Press Windows key + I and access Time and Language;
Click Language and Region;
Click (...) which will be to the right of Preferred Languages and select "Language Options";
Scroll down to keyboards and click (...) on the right;
Select Remove;
Do this for all layouts you want to delete;
I hope I have helped, see you soon!