Remove unneccesary exception handler

Change-Id: I8ffa95e803c70982fa59ed067dda12fd7568f775
diff --git a/apps/aaa/src/main/java/org/onosproject/aaa/AaaManager.java b/apps/aaa/src/main/java/org/onosproject/aaa/AaaManager.java
index b3ea621..4567f01 100755
--- a/apps/aaa/src/main/java/org/onosproject/aaa/AaaManager.java
+++ b/apps/aaa/src/main/java/org/onosproject/aaa/AaaManager.java
@@ -350,12 +350,8 @@
 
                     break;
                 case EAPOL.EAPOL_LOGOFF:
-                    if (stateMachine.state() == stateMachine.STATE_AUTHORIZED) {
-                        try {
-                            stateMachine.logoff();
-                        } catch (StateMachineException e) {
-                            e.printStackTrace();
-                        }
+                    if (stateMachine.state() == StateMachine.STATE_AUTHORIZED) {
+                        stateMachine.logoff();
                     }
 
                     break;