can't remove deleted team from crate owners

[Xaeroxe]

We recently deleted the github:amethyst:engine-devs team, and moved most of its functionality to github:amethyst:core.

We can't remove the engine-devs team from our existing crates now though, when we attempt to we get the following error:

error: failed to remove owners from crate amethyst_animation

Caused by:
  api errors: only members of a team can add it as an owner

UPDATE: We resolved this on our own, but I'm leaving this issue open so crates.io can determine what to do with deleted teams.

[Xaeroxe]

Come to think of it I'm not super sure we actually ran into an issue here, so I'm closing this.