Disable v5 build

Signed-off-by: Ranjan-Dasgupta <Ranjan.Dasgupta@us.ibm.com>

Author: Ranjan-Dasgupta

.travis.yml

@@ -14,5 +14,5 @@ before_install:
 script:
   - mvn -B clean -q
   - mvn -B --projects org.eclipse.paho.client.mqttv3,org.eclipse.paho.client.mqttv3.test test -q
-  - mvn -B --projects org.eclipse.paho.mqttv5.common,org.eclipse.paho.mqttv5.client,org.eclipse.paho.mqttv5.client.test test -q
+#  - mvn -B --projects org.eclipse.paho.mqttv5.common,org.eclipse.paho.mqttv5.client,org.eclipse.paho.mqttv5.client.test test -q