EntityBeans are part of the EJB2 (and former) specification. Since JavaEE7 (EJB 3.2) these spec is optional for the server to implement.
Therefore current Wildfly or EAP7 will not support this Beans.
To move your application you should strip the EntityBean to be a POJO with @Entity (and other) annotation so you will have a EJB3 JPA bean.
Another approach is to migrate an object which was often used oin EJB2 times to transport the date called ValueObject VO or DataObject DO, this is very similar to a JPA Pojo and you can add the necessary annotation.