removed TODOs that are out of date

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/RibbonClientConfiguration.java

@@ -64,7 +64,6 @@ public class RibbonClientConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	// TODO: move to ribbon.eureka package
 	public ILoadBalancer ribbonLoadBalancer(IClientConfig config,
 			ServerListFilter<Server> filter) {
 		ZoneAwareLoadBalancer<Server> balancer = new ZoneAwareLoadBalancer<>(config);

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/ZonePreferenceServerListFilter.java

@@ -38,8 +38,6 @@ import com.netflix.loadbalancer.ZoneAffinityServerListFilter;
 @EqualsAndHashCode(callSuper = false)
 public class ZonePreferenceServerListFilter extends ZoneAffinityServerListFilter<Server> {
 
-	// TODO: move out of ribbon.eureka package since it has nothing specific to eureka
-
 	private String zone;
 
 	@Override