There was a bug in which we would not drop the RegionSizes
for a table in a namespace, where the namespace had a quota
on it. This allowed a scenario in which recreation of a table
inside of a namespace would unintentionally move into violation
despite the table being empty. Need to make sure the RegionSizes
are dropped on table deletion if there is _any_ quota applying
to that table.
Signed-off-by: Josh Elser <elserj@apache.org>