Remove unused import statements

Change-Id: I4a62c438ee29b2918d1aafb64b29133149afd02c
diff --git a/core/api/src/main/java/org/onosproject/net/flow/TrafficSelector.java b/core/api/src/main/java/org/onosproject/net/flow/TrafficSelector.java
index f2de9a0..534f6b9 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/TrafficSelector.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/TrafficSelector.java
@@ -24,7 +24,6 @@
 import org.onlab.packet.TpPort;
 import org.onlab.packet.VlanId;
 import org.onosproject.net.PortNumber;
-import org.onosproject.net.flow.DefaultTrafficSelector.Builder;
 import org.onosproject.net.flow.criteria.Criterion;
 
 /**
diff --git a/core/api/src/test/java/org/onosproject/event/EventDeliveryServiceAdapter.java b/core/api/src/test/java/org/onosproject/event/EventDeliveryServiceAdapter.java
index 6d5e893..b81155e 100644
--- a/core/api/src/test/java/org/onosproject/event/EventDeliveryServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/event/EventDeliveryServiceAdapter.java
@@ -17,8 +17,6 @@
 
 import java.util.Set;
 
-import static org.junit.Assert.*;
-
 /**
  * Testing adapter for the event delivery service.
  */
diff --git a/core/api/src/test/java/org/onosproject/net/OchSignalTest.java b/core/api/src/test/java/org/onosproject/net/OchSignalTest.java
index c171d52..1ab1729 100644
--- a/core/api/src/test/java/org/onosproject/net/OchSignalTest.java
+++ b/core/api/src/test/java/org/onosproject/net/OchSignalTest.java
@@ -18,8 +18,6 @@
 import com.google.common.testing.EqualsTester;
 import org.junit.Test;
 
-import static org.junit.Assert.*;
-
 /**
  * Test for OchSignal.
  */
diff --git a/core/api/src/test/java/org/onosproject/net/intent/PartitionServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/intent/PartitionServiceAdapter.java
index ffb2635..2a38cbb 100644
--- a/core/api/src/test/java/org/onosproject/net/intent/PartitionServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/intent/PartitionServiceAdapter.java
@@ -17,8 +17,6 @@
 
 import org.onosproject.cluster.NodeId;
 
-import static org.junit.Assert.*;
-
 /**
  * Testing adapter for the partition service.
  */