It shouldn't matter. While it's odd and worrying, the XSDs are not part of your build artifact, so it shouldn't affect how the application functions.
I want you to deploy the WAR file that Maven builds into Wildfly manually. If you don't know how to do that, consult the Wildfly user manual.
If after deployment, the application still doesn't work, I want you to unpack the WAR file, and write down the directory structure for us.