Please remove deprecated annotation for InPushConnectorFactoryRegistry

[DivineThreepwood]

Target Version rsb 0.18

Please remove the [@deprecated] annotation of the InPushConnectorFactoryRegistry
or offer an alternative configuration solution which is not deprecated.

/**
 * Registry for globally available {@link InPushConnectorFactory} instances.
 *
 * @deprecated this is more or less a hack until the configuration system
 *             supports a better structured way to specify the factory
 *             instances.
 * @author jwienke
 */
@Deprecated
public final class InPushConnectorFactoryRegistry {

This configuration is maybe a "hack" but it's the only way how the shared connection support of participants can be used right? It's really annoying to get warnings for code segments which are actually not outdated.