remove zookeeper config requirement (#5375)

Co-authored-by: Brendan Doyle <[email protected]>

Author: bdoyle0182

core/invoker/src/main/scala/org/apache/openwhisk/core/invoker/Invoker.scala

@@ -91,7 +91,6 @@ object Invoker {
     Map(servicePort -> 8080.toString) ++
       ExecManifest.requiredProperties ++
       kafkaHosts ++
-      zookeeperHosts ++
       wskApiHost
 
   def initKamon(instance: Int): Unit = {

core/scheduler/src/main/scala/org/apache/openwhisk/core/scheduler/Scheduler.scala

@@ -275,7 +275,6 @@ object Scheduler {
       schedulerRpcPort -> null,
       WhiskConfig.actionInvokeConcurrentLimit -> null) ++
       kafkaHosts ++
-      zookeeperHosts ++
       ExecManifest.requiredProperties
 
   def initKamon(instance: SchedulerInstanceId): Unit = {