Merge "Fix Sonar Issues policy/engine POLICY-SDK-APP module"

diff --cc POLICY-SDK-APP/src/main/java/org/onap/policy/controller/PolicyController.java
index 7df8602,637b0fc..3485163
--- 1/POLICY-SDK-APP/src/main/java/org/onap/policy/controller/PolicyController.java
--- 2/POLICY-SDK-APP/src/main/java/org/onap/policy/controller/PolicyController.java
+++ b/POLICY-SDK-APP/src/main/java/org/onap/policy/controller/PolicyController.java
@@@ -36,8 -36,8 +37,7 @@@ import java.util.Map
  import java.util.Map.Entry;
  import java.util.Properties;
  import java.util.Set;
 -import java.nio.charset.StandardCharsets;
  import javax.annotation.PostConstruct;
- import javax.mail.MessagingException;
  import javax.script.SimpleBindings;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;