Simplify Akka configuration

src/main/resources/akka.conf

 # Merged with defaults in woken-messages/reference.conf
 akka {
-  loglevel = "WARNING"
-  loglevel = ${?LOG_LEVEL}
-  stdout-loglevel = "WARNING"
-  stdout-loglevel = ${?LOG_LEVEL}
-  loggers = ["akka.event.slf4j.Slf4jLogger"]
-  logging-filter = "akka.event.slf4j.Slf4jLoggingFilter"
-
-  log-config-on-start = off
-  log-config-on-start = ${?LOG_CONFIG}
-
-  log-dead-letters = 10
-  log-dead-letters-during-shutdown = off
-
-  coordinated-shutdown.terminate-actor-system = on
-
   actor {
     # provider = "cluster"
-
-    allow-java-serialization = off
-    enable-additional-serialization-bindings = true
-
-  }
-
-  remote {
-    log-sent-messages = off
-    log-received-messages = off
-    log-remote-lifecycle-events = off
-
-    watch-failure-detector {
-      acceptable-heartbeat-pause = 20 s
-    }
-
   }
 
   cluster {
-    seed-nodes = [
-      ${remoting.protocol}"://"${clustering.cluster.name}"@"${clustering.seed-ip}":"${clustering.seed-port}
-    ]
-
-    shutdown-after-unsuccessful-join-seed-nodes = 20s
-
     roles = ["portal"]
-
-  }
-
-  http {
-    server {
-      idle-timeout = 300s
-      request-timeout = 180s
-      ssl-encryption = off
-      ssl-tracing = on
-    }
-
-    client {
-      idle-timeout = 300s
-      request-timeout = 20 s
-    }
   }
 }