Remove Jaeger example and OpenTracing support

When looking into https://github.com/eclipse-ee4j/jersey/pull/6056, I have found that the OpenTracing project was discontinued, see
* https://github.com/opentracing/specification/issues/163
* https://github.com/opentracing - All repositories are archived, project abandoned to OpenTelemetry.

Jaeger is still alive, but I guess completely changed APIs, so we would have to redo the whole thing.
* https://medium.com/jaegertracing/jaeger-v2-released-09a6033d1b10
* https://www.jaegertracing.io/download/

> "Jaeger v1 has reached [end-of-life](https://github.com/jaegertracing/jaeger/issues/6321) on December 31, 2025 and will no longer receive updates."

*

For now we should remove:
```
open-tracing
jar
jersey-examples-open-tracing
```
and
```
org.glassfish.jersey.incubator
jersey-open-tracing
```