docs: drop the bao dashboard section again; a dashboard needs no page

Reverts the previous commit: the panels describe themselves, and the operator
ruled that this change needs no docs page.

docs/swarm/bao.md

@@ -97,16 +97,6 @@ constrain what a policy says. What bounds it:
 responds while every read times out — the failure looks like a stall, not like
 a store that was never initialised.
 
-## Watching the store
-
-The `hyperhive · openbao` dashboard in Grafana shows seal state, uptime,
-request latency, leases and heap from the store's own metrics. Three more
-panels read its journal: the lines delivered, the `[WARN]` and `[ERROR]` lines
-over time, and the recent ones. A flat zero in **Log lines delivered** while
-the store is up means its logs aren't arriving, not that it's quiet. The
-journal gives these lines no severity, so the panels match on the level the
-store writes into the message.
-
 ## TLS
 
 The store serves TLS, and on a host that deploys it you need do nothing: