client/state/invites/reducer.js
function deleteInvites( siteInvites, invitesToDelete ) {
	return siteInvites.filter( siteInvite => ! includes( invitesToDelete, siteInvite.key ) );
}
function deleteInvites( siteInvites, invitesToDelete ) {
	return siteInvites.filter( siteInvite => ! includes( invitesToDelete, siteInvite.key ) );
}
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.