Refactor of CFM code part 5 - SonarQube recommended code changes

previously:

Refactor of CFM code part 4 - Microsemi driver - updating modules.deps with the move of the driver code
Refactor of CFM code part 3 - Microsemi driver: moved everything out of drivers/microsemi to /drivers/microsemi/ea1000 to make room for future drivers
Refactor of CFM code parti 2 - API: moved everything from incubator/*/src/main/java/org/onosproject/incubator/net/l2monitoring to apps/cfm/*/src/main/java/org/onosproject/incubator/net/l2monitoring - this means that services belonging to l2 monitoring will now only be loaded when cfm app is started
Refactor of CFM code part 1 - NBI: moves the CLI and REST part of the app down a level to an nbi folder for a more consistent approach with other modules

Change-Id: I39b302fd8620f59d34ab41208cbc28765951aad4
diff --git a/apps/cfm/nbi/src/main/java/org/onosproject/cfm/cli/completer/CfmMaNameCompleter.java b/apps/cfm/nbi/src/main/java/org/onosproject/cfm/cli/completer/CfmMaNameCompleter.java
index b484212..1463804 100644
--- a/apps/cfm/nbi/src/main/java/org/onosproject/cfm/cli/completer/CfmMaNameCompleter.java
+++ b/apps/cfm/nbi/src/main/java/org/onosproject/cfm/cli/completer/CfmMaNameCompleter.java
@@ -34,16 +34,8 @@
         CfmMdService service = get(CfmMdService.class);
         service.getAllMaintenanceDomain().forEach(md ->
             md.maintenanceAssociationList().forEach(ma ->
-                choices.add(new StringBuilder(md.mdId().mdName())
-                .append("(")
-                .append(md.mdId().nameType())
-                .append(")")
-                .append(ma.maId().maName())
-                .append("(")
-                .append(ma.maId().nameType())
-                .append(")").toString())
-            )
-        );
+                choices.add(md.mdId().mdName() + "(" + md.mdId().nameType() + ")" +
+                        ma.maId().maName() + "(" + ma.maId().nameType() + ")")));
 
         return choices;
     }