Revert changes to use constants for Sonar suppression

It turns out that suppression annotations have to have the actual
string literal in them; if you use a defined constant SonarQube
ignores the suppression.

Change-Id: I3628df116d182b01a108da0d6f059784a3be4fed
diff --git a/apps/events/src/main/java/org/onosproject/events/EventsCommand.java b/apps/events/src/main/java/org/onosproject/events/EventsCommand.java
index 4d26466..03419af 100644
--- a/apps/events/src/main/java/org/onosproject/events/EventsCommand.java
+++ b/apps/events/src/main/java/org/onosproject/events/EventsCommand.java
@@ -44,7 +44,6 @@
 import com.google.common.collect.ImmutableList;
 
 import static java.util.stream.Collectors.toList;
-import static org.onlab.util.SonarSuppressionConstants.SONAR_PRINT_STACK_TRACE;
 
 /**
  * Command to print history of instance local ONOS Events.
@@ -162,7 +161,7 @@
      *
      * @param json JSON node to print
      */
-    @java.lang.SuppressWarnings(SONAR_PRINT_STACK_TRACE)
+    @java.lang.SuppressWarnings("squid:S1148")
     private void printJson(JsonNode json) {
         try {
             print("%s", mapper().writerWithDefaultPrettyPrinter().writeValueAsString(json));