parent-pom: remove <repositories> and <distributionManagement>
parent-pom: remove <repositories> and <distributionManagement>

These should be set in per-project or per-user settings, and not forced
by a parent pom.

Jenkins sets these appropriately, in its own managed settings.xml file.

Kurento/kurento-java,Kurento/kurento-java,Kurento/kurento-java,Kurento/kurento-java