remove id req.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Author: yadvr

api/src/main/java/org/apache/cloudstack/api/command/user/backup/ListBackupOfferingsCmd.java

@@ -78,7 +78,6 @@ public Long getPolicyId() {
 
     @Override
     public void execute() throws ResourceUnavailableException, ServerApiException, ConcurrentOperationException {
-        validateParameters();
         try {
             final List<BackupOffering> backupOfferings = backupManager.listBackupOfferings(getZoneId(), getPolicyId());
             setupResponseBackupOfferingsList(backupOfferings);
@@ -89,12 +88,6 @@ public void execute() throws ResourceUnavailableException, ServerApiException, C
         }
     }
 
-    private void validateParameters() {
-        if (getZoneId() == null) {
-            throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Please provide a valid zone ID");
-        }
-    }
-
     @Override
     public String getCommandName() {
         return APINAME.toLowerCase() + RESPONSE_SUFFIX;