lib/plugins/aws/customResources/resources/eventBridge/lib/permissions.js/removePermission
function removePermission(config) {
  const { functionName, region, ruleName } = config;
  const lambda = new AWS.Lambda({ region });
  const params = {
    FunctionName: functionName,
    StatementId: getStatementId(functionName, ruleName),
  };
  return lambda.removePermission(params).promise();
}