Removing isEmpty() method

Author: Dingane Hlaluku

api/src/main/java/org/apache/cloudstack/api/command/admin/diagnostics/ExecuteDiagnosticsCmd.java

@@ -134,7 +134,7 @@ public void execute() throws ResourceUnavailableException, InsufficientCapacityE
         ExecuteDiagnosticsResponse response = new ExecuteDiagnosticsResponse();
         try {
             final Map<String, String> answerMap = diagnosticsService.runDiagnosticsCommand(this);
-            if (answerMap != null || !answerMap.isEmpty()) {
+            if (answerMap != null) {
                 response.setStdout(answerMap.get("STDOUT"));
                 response.setStderr(answerMap.get("STDERR"));
                 response.setExitCode(answerMap.get("EXITCODE"));