remove todos, and point from https://github.com/phetsims/phet-io/issues/1774 to https://github.com/phetsims/phet-io/issues/1774
remove todos, and point from https://github.com/phetsims/phet-io/issues/1774 to https://github.com/phetsims/phet-io/issues/1774

phetsims/tandem,phetsims/tandem,phetsims/tandem