Fixed the WARNING message when create a cxf endpoint from Spring bean

There is a annoying WARNING message（which is harmless) when creating the camel-cxf endpoint from the spring bean.

ReflectionServiceFactoryBean   WARN  A
JAX-WS Annotation was found on com.acme.BusinessServicePort while using the
Simple frontend.  For better results, use the JAX-WS frontend.

You can find more information here[1].
[1]http://camel.465427.n5.nabble.com/Warning-in-cxf-endpoint-configuration-tp4561812p4561812.html