I feel like I've mentioned this a few times, but it keeps getting lost in the thread, but the endings were removed because essentially it was low effort, only about 50 lines of dialogue, and received poor feedback. Anyone confused as to why this function was removed needn't worry, because in reality barely anything was touched.
Instead, a 100% completion bonus will be available in the next version which will lead to the credits, and that by itself has already had several days more effort put into it than all the other endings combined, which only took a few hours.