code: func (c *MTurk) DeleteQualificationType(input *DeleteQualificationTypeInput) (*DeleteQualificationTypeOutput, error) {
  	req, out := c.DeleteQualificationTypeRequest(input)
  	return out, req.Send()
  }
docs: // DeleteQualificationType API operation for Amazon Mechanical Turk.
  //
  // The DeleteQualificationType deletes a Qualification type and deletes any
  // HIT types that are associated with the Qualification type.
  //
  // This operation does not revoke Qualifications already assigned to Workers
  // because the Qualifications might be needed for active HITs. If there are
  // any pending requests for the Qualification type, Amazon Mechanical Turk rejects
  // those requests. After you delete a Qualification type, you can no longer
  // use it to create HITs or HIT types.
  //
  // DeleteQualificationType must wait for all the HITs that use the deleted Qualification
  // type to be deleted before completing. It may take up to 48 hours before DeleteQualificationType
  // completes and the unique name of the Qualification type is available for
  // reuse with CreateQualificationType.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for Amazon Mechanical Turk's
  // API operation DeleteQualificationType for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeServiceFault "ServiceFault"
  //   Amazon Mechanical Turk is temporarily unable to process your request. Try
  //   your call again.
  //
  //   * ErrCodeRequestError "RequestError"
  //   Your request is invalid.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/mturk-requester-2017-01-17/DeleteQualificationType