Remove unnecessary modifiers

Change-Id: I890c9b33ae8e8402520230860fa575a9ec757b2d
diff --git a/core/api/src/main/java/org/onosproject/net/Device.java b/core/api/src/main/java/org/onosproject/net/Device.java
index d900182..ffbf7f9 100644
--- a/core/api/src/main/java/org/onosproject/net/Device.java
+++ b/core/api/src/main/java/org/onosproject/net/Device.java
@@ -25,7 +25,7 @@
     /**
      * Coarse classification of the type of the infrastructure device.
      */
-    public enum Type {
+    enum Type {
         SWITCH, ROUTER, ROADM, OTN, ROADM_OTN, FIREWALL, BALANCER, IPS, IDS, CONTROLLER,
         VIRTUAL, FIBER_SWITCH, MICROWAVE, OTHER
     }