Use diamond operator

Change-Id: Ic7637e41b9e6a4ac04cd81caf07cea0e7a30909c
diff --git a/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java b/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
index a4ec0ff..00c8c69 100644
--- a/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
+++ b/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
@@ -47,7 +47,7 @@
     private static final Logger log = LoggerFactory.getLogger(PcepClientControllerImpl.class);
 
     protected ConcurrentHashMap<PccId, PcepClient> connectedClients =
-            new ConcurrentHashMap<PccId, PcepClient>();
+            new ConcurrentHashMap<>();
 
     protected PcepClientAgent agent = new PcepClientAgent();
     protected Set<PcepClientListener> pcepClientListener = new HashSet<>();