code: function deleteInvites( siteInvites, invitesToDelete ) {
  	return siteInvites.filter( siteInvite => ! includes( invitesToDelete, siteInvite.key ) );
  }
docs: Returns an array of site invites, without the deleted invite objects.
  
  @param  {Array} siteInvites      Array of invite objects.
  @param  {Array} invitesToDelete  Array of invite keys to remove.
  @return {Array}                  Updated array of invite objects.