The recommend.allow list in scope_overrides.json special-cased a set of
calendar/contact/mail scopes into the auto-approve set on top of the
platform recommendations in scope_priorities.json. Remove all entries so
no scopes are special-cased anymore; auto-approve now reflects only the
platform recommend=true scopes (plus the recommend.deny removals).
Update registry tests to use a recommend=true scope (sheets:spreadsheet:read)
as the auto-approve sample and assert the override allow set is empty.
Change-Id: Ic555a2c664e2dbd742f79712253f2918dfabf7ce
fa929f02d6