A couple of Postgres points:
psql's \z is a convenient shorthand for listing database object permissions.
It sounds like you're looking for REASSIGN OWNED BY $user-to-delete TO $another-user; which will handle any dependencies for you and give you a clear path to dropping the user. Don't just drop owned objects unless you're in a sandbox -- it's hard to get those back!
REASSIGN OWNED BY $user-to-delete TO $another-user;
I've updated the post - thanks for the feedback!
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