Remove deprecated ApiVersionUtil classes

[manusa]

Description

Part of #6602

The following classes are deprecated and no longer used, they must be removed:

• https://github.com/fabric8io/kubernetes-client/blob/25ecf8460eb132ae2945342b33f64a4240a2b91c/extensions/knative/client/src/main/java/io/fabric8/knative/client/util/ApiVersionUtil.java
• https://github.com/fabric8io/kubernetes-client/blob/25ecf8460eb132ae2945342b33f64a4240a2b91c/extensions/tekton/client/src/main/java/io/fabric8/tekton/client/util/ApiVersionUtil.java