provider-flags: drop it — api.hanzo.ai 404s the route

Authenticated, three times running. No per-service spec declares it either; it
survived only in the merged document, describing a door apps/ai no longer opens.

Same shape as edge/nodes: a spec that outlived its server makes `hanzo` generate
a command for an address with nothing behind it.

Co-authored-by: Hanzo Dev <[email protected]>

hanzo.yaml

@@ -83990,19 +83990,6 @@ paths:
       tags:
       - prompts
       x-app: prompts
-  /v1/provider-flags:
-    get:
-      description: "Public, secret-free list of enabled Model provider NAMES. Used by\nthe pricing catalog sync to gate which\
-        \ providers' models are published\n(replaces the standalone ENABLE_OPENROUTER env \u2014 one control). Safe to be\n\
-        unauthenticated: no keys, URLs, or config are returned."
-      operationId: get_v1_provider-flags
-      summary: Public, secret-free list of enabled Model provider NAMES.
-      tags:
-      - provider-flags
-      x-app: github.com/hanzoai/ai
-      responses:
-        default:
-          description: The route answers; its response shape is not declared at the source (not a typed op).
   /v1/pubsub/jetstream/streams:
     get:
       description: "Returns the org's streams, sorted by name.\n\nA stream is the durable log: it captures every message published\