Ah! Yes, the “Edible” and “Meow” languages were removed because a) they were always intended to be temporary b) they were causing problems for volunteer translators in our translations system called Transifex.
Because they are not real languages they could not be imported into our system for localization which meant that bugs in those two languages were a common occurrence and we would have had to build a whole system for tracking changes around them.
Edible Scratch and Meow were removed because the translation system we use, unfortunately, doesn't recognize joke languages. But it is much better for translations, which is awesome because it means more people around the world will be able to use Scratch more easily