Remove code duplication

Change-Id: I428677343fe71aded4156e5fc9b84a9d994a6bae
diff --git a/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java b/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
index b57e375..de6a368 100644
--- a/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
+++ b/core/api/src/main/java/org/onlab/onos/net/intent/Intent.java
@@ -113,7 +113,7 @@
             return false;
         }
         final Intent other = (Intent) obj;
-        return this.id().equals(((Intent) obj).id());
+        return this.id().equals(other.id());
     }
 
     /**