Delete Remote Event Receivers using Client Object Model C#

Dear Team,

I am working on Remote Event Receivers SharePoint Auto-hosted App using Client Object Model (C#) and adding events to list successfully.

But deleting remote event receivers using client object model throwing error "Access denied. You do not have permission to perform this action or access this resource."

I am using the below code to delete remote event receivers.

 using (SP.ClientContext clientContext = new SP.ClientContext("SiteURL"))
            {
                clientContext.Credentials = new SP.SharePointOnlineCredentials(loginName, securePassword);
                clientContext.FormDigestHandlingEnabled = true;
                if (clientContext != null)
                {                    
                    var documentsList = clientContext.Web.Lists.GetByTitle("Documents");
                    clientContext.Load(documentsList, d => d.EventReceivers);
                    clientContext.ExecuteQuery();                   
                    
                    SP.EventReceiverDefinitionCollection eventReceiverDefinitionCollection = documentsList.EventReceivers;
                    clientContext.Load(eventReceiverDefinitionCollection);
                    clientContext.ExecuteQuery();                    
                    foreach (SP.EventReceiverDefinition definition in eventReceiverDefinitionCollection)
                    {
                        if (definition.ReceiverName == "UploadRemoteEventReceiver")
                        {
                            definition.DeleteObject();
                            clientContext.ExecuteQuery();
                        }
                        
                    }
                }
            }

Please review and advice i am doing wrong or any other solution.

Thanks and regards,

Pradeep

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Pradeep Kodam SharePoint Software Programmer