Remove database pool setting
Summary
As this setting was removed from Omnibus in gitlab-org/omnibus-gitlab!4426 (merged) and discussed in gitlab-com/gl-infra/scalability#495 (closed), we should remove the pool
setting from the charts as well.
It currently exists in a few places:
- the
_database.yml.tpl
- the
_geo.tpl
- docs, default values
- specs
/cc @marin