Remove outside collaborator

Removing a user from this list will remove them from all the organization's repositories.

DELETE /orgs/:org/outside_collaborators/:username

Response

Status: 204 No Content

Response if user is a member of the organization

Status: 422 Unprocessable Entity

{
  "message": "You cannot specify an organization member to remove as an outside collaborator.",
  "documentation_url": "https://developer.github.com/v3/orgs/outside_collaborators/#remove-outside-collaborator"
}