Revert "Issue #3477793: Add 'Verified' role for Flexible group, update permis…"

..._default_route/src/EventSubscriber/RedirectSubscriber.php

...up/config/install/group.role.flexible_group-anonymous.yml

...oup/config/install/group.role.flexible_group-outsider.yml

...oup/config/install/group.role.flexible_group-verified.yml

...nfig/update/social_group_flexible_group_update_130006.yml

...group_flexible_group/social_group_flexible_group.info.yml

..._group_flexible_group/social_group_flexible_group.install

phpstan-baseline.neon

...ities/groups/flexible/groups-flexible-page-access.feature

...es/groups/flexible/groups-flexible-sidebar-blocks.feature

...xible/groups-flexible-view-outsider-authenticated.feature

...s/flexible/groups-flexible-view-outsider-verified.feature