qtwayland-examples was disabled during the move to krogoth. Check where they are located now in the new QT version and enable/remove accordingly.

https://git.automotivelinux.org/gerrit/gitweb?p=AGL/meta-agl-demo.git;a=blob;f=recipes-qt/packagegroups/packagegroup-agl-appfw-native-qt5.bb;h=1fe2579fd9b36d94e6c964165a24e60bd9cbc8fd;hb=c893ae9b7e61a833899b181e0017ee2cfab8b97e