Remove placeholder from interface since it is adding more complexity

[aguillenv]

[dfellis]

Remove the placeholder object in the memo for the interface.ts read method. Nothing should be using it but somehow when we first tried to remove it it broke most of the test suite, so we need to figure out why.

[depombo]

@dfellis I think this is no longer revenant with the class-based approach?

[dfellis]

Unfortunately no. This is in the Crud2 class which survived that transition.