Remove redundant type arguments

Change-Id: I3f82f2b788b22500689a89bc5253d2f8052a7f8d

@@ -258,7 +258,7 @@ public class DistributedDhcpStore implements DhcpStore {
 
     @Override
     public Iterable<Ip4Address> getAvailableIPs() {
-        return ImmutableSet.<Ip4Address>copyOf(freeIPPool);
+        return ImmutableSet.copyOf(freeIPPool);
     }
 
     @Override

@@ -107,7 +107,7 @@ public class IntentMetrics implements IntentMetricsService,
     @Override
     public List<IntentEvent> getEvents() {
         synchronized (lastEvents) {
-            return ImmutableList.<IntentEvent>copyOf(lastEvents);
+            return ImmutableList.copyOf(lastEvents);
         }
     }
 

@@ -138,7 +138,7 @@ public class TopologyMetrics implements TopologyMetricsService {
     @Override
     public List<Event> getEvents() {
         synchronized (lastEvents) {
-            return ImmutableList.<Event>copyOf(lastEvents);
+            return ImmutableList.copyOf(lastEvents);
         }
     }