Deletes a relayer by ID.

{
  "data": "string",
  "error": "string",
  "pagination": {
    "current_page": 0,
    "per_page": 0,
    "total_items": 0
  },
  "success": true
}

{
  "data": null,
  "message": "Cannot delete relayer 'relayer_id' because it has N transaction(s). Please wait for all transactions to complete or cancel them before deleting the relayer.",
  "success": false
}

{
  "data": null,
  "message": "Unauthorized",
  "success": false
}

{
  "data": null,
  "message": "Relayer with ID relayer_id not found",
  "success": false
}

{
  "data": null,
  "message": "Internal Server Error",
  "success": false
}