Remove unnecessary modifiers

Change-Id: I890c9b33ae8e8402520230860fa575a9ec757b2d
diff --git a/core/api/src/main/java/org/onosproject/store/service/DatabaseUpdate.java b/core/api/src/main/java/org/onosproject/store/service/DatabaseUpdate.java
index 8cac596..a62d382 100644
--- a/core/api/src/main/java/org/onosproject/store/service/DatabaseUpdate.java
+++ b/core/api/src/main/java/org/onosproject/store/service/DatabaseUpdate.java
@@ -31,7 +31,7 @@
     /**
      * Type of database update operation.
      */
-    public static enum Type {
+    public enum Type {
         /**
          * Insert/Update entry without any checks.
          */