Remove explicit use of the default value

Change-Id: I27efdfbb7703f49b7ca13b12fcc71fa20bccf6a7
diff --git a/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java b/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
index 98d4fd9..a61b150 100644
--- a/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
+++ b/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
@@ -91,7 +91,7 @@
 /**
  * Provides implementation of the flow NB & SB APIs.
  */
-@Component(immediate = true, enabled = true)
+@Component(immediate = true)
 @Service
 public class FlowRuleManager
         extends AbstractListenerProviderRegistry<FlowRuleEvent, FlowRuleListener,
diff --git a/core/net/src/main/java/org/onosproject/net/key/impl/DeviceKeyManager.java b/core/net/src/main/java/org/onosproject/net/key/impl/DeviceKeyManager.java
index 8110f5d..3a00f84 100644
--- a/core/net/src/main/java/org/onosproject/net/key/impl/DeviceKeyManager.java
+++ b/core/net/src/main/java/org/onosproject/net/key/impl/DeviceKeyManager.java
@@ -43,7 +43,7 @@
 /**
  * Implementation of device key services.
  */
-@Component(immediate = true, enabled = true)
+@Component(immediate = true)
 @Service
 public class DeviceKeyManager extends AbstractListenerManager<DeviceKeyEvent, DeviceKeyListener>
         implements DeviceKeyService, DeviceKeyAdminService {
diff --git a/core/net/src/main/java/org/onosproject/net/statistic/impl/FlowStatisticManager.java b/core/net/src/main/java/org/onosproject/net/statistic/impl/FlowStatisticManager.java
index 487e9af..59afadc 100644
--- a/core/net/src/main/java/org/onosproject/net/statistic/impl/FlowStatisticManager.java
+++ b/core/net/src/main/java/org/onosproject/net/statistic/impl/FlowStatisticManager.java
@@ -67,7 +67,7 @@
 /**
  * Provides an implementation of the Flow Statistic Service.
  */
-@Component(immediate = true, enabled = true)
+@Component(immediate = true)
 @Service
 public class FlowStatisticManager implements FlowStatisticService {
     private final Logger log = getLogger(getClass());