Remove unsupported feature repositories from Karaf repo

enterprise=mvn:org.apache.karaf.features/enterprise/${karaf.version}/xml/features
enterprise-legacy=mvn:org.apache.karaf.features/enterprise-legacy/${karaf.version}/xml/features
spring=mvn:org.apache.karaf.features/spring/${karaf.version}/xml/features
spring-legacy=mvn:org.apache.karaf.features/spring-legacy/${karaf.version}/xml/features
cellar=mvn:org.apache.karaf.cellar/apache-karaf-cellar/RELEASE/xml/features
cave=mvn:org.apache.karaf.cave/apache-karaf-cave/RELEASE/xml/features 
camel=mvn:org.apache.camel.karaf/apache-camel/RELEASE/xml/features
camel-extras=mvn:org.apache-extras.camel-extra.karaf/camel-extra/RELEASE/xml/features
cxf=mvn:org.apache.cxf.karaf/apache-cxf/RELEASE/xml/features
cxf-dosgi=mvn:org.apache.cxf.dosgi/cxf-dosgi/RELEASE/xml/features
cxf-dosgi-samples=mvn:org.apache.cxf.dosgi/cxf-dosgi-samples/RELEASE/xml/features
cxf-xkms=mvn:org.apache.cxf.services.xkms/cxf-services-xkms-features/RELEASE/xml
activemq=mvn:org.apache.activemq/activemq-karaf/RELEASE/xml/features     <--- REMOVE --->
jclouds=mvn:org.apache.jclouds.karaf/jclouds-karaf/RELEASE/xml/features
openejb=mvn:org.apache.openejb/openejb-feature/RELEASE/xml/features
wicket=mvn:org.ops4j.pax.wicket/features/RELEASE/xml/features     <--- REMOVE --->
hawtio=mvn:io.hawt/hawtio-karaf/RELEASE/xml/features
pax-cdi=mvn:org.ops4j.pax.cdi/pax-cdi-features/RELEASE/xml/features
pax-jdbc=mvn:org.ops4j.pax.jdbc/pax-jdbc-features/RELEASE/xml/features
pax-jms=mvn:org.ops4j.pax.jms/pax-jms-features/RELEASE/xml/features
pax-jpa=mvn:org.ops4j.pax.jpa/pax-jpa-features/RELEASE/xml/features
pax-transx=mvn:org.ops4j.pax.transx/pax-transx-features/RELEASE/xml/features
pax-keycloak=mvn:org.ops4j.pax.keycloak/pax-keycloak-features/RELEASE/xml/features
pax-web=mvn:org.ops4j.pax.web/pax-web-features/RELEASE/xml/features
pax-wicket=mvn:org.ops4j.pax.wicket/pax-wicket-features/RELEASE/xml/features     <--- REMOVE --->
ecf=http://download.eclipse.org/rt/ecf/RELEASE/site.p2/karaf-features.xml
decanter=mvn:org.apache.karaf.decanter/apache-karaf-decanter/RELEASE/xml/features
eclipsesource-jaxrs=mvn:com.eclipsesource.jaxrs/features/RELEASE/xml/features             <--- What's that? --->
aries-jpa=mvn:org.apache.aries.jpa/jpa-features/RELEASE/xml/features
aries-rsa=mvn:org.apache.aries.rsa/rsa-features/RELEASE/xml/features
hibernate=mvn:org.hibernate/hibernate-osgi/RELEASE/xml/karaf
ignite=mvn:org.apache.ignite/ignite-osgi-karaf/RELEASE/xml/features
openjpa=mvn:org.apache.openjpa/openjpa-features/RELEASE/xml/features     <--- REMOVE --->
brave=mvn:io.zipkin.brave.karaf/brave-features/RELEASE/xml/features          <--- What's that? --->
sling=mvn:org.apache.sling/org.apache.sling.karaf-features/RELEASE/xml/features          <--- What's that? --->