delete:
  tags:
    - posts
  summary: delete a post diff
  description: This operation deletes a post diff from its history.
  parameters:
    - in: path
      name: pid
      schema:
        type: string
      required: true
      description: a valid post id
      example: 2
    - in: path
      name: timestamp
      schema:
        type: number
      required: true
      description: a valid UNIX timestamp
      example: 1611850000000
  responses:
    '200':
      description: Post diff successfully deleted
      content:
        $ref: ../diffs.yaml#/get/responses/200/content