Graduate stable features from experimental docs

Remove the following long-stable features from the experimental features
list in v1-guarantees.md:
- Azure blob storage
- Zone awareness based replication
- Blocksconvert tools
- Scalable query-frontend (when using query-scheduler)
- Query-frontend: query stats tracking
- Block deletion marks migration in compactor
- HA Tracker: cleanup of old replicas from KV Store
- Exemplar storage
- Querier limits (max-fetched-chunks/bytes/series-per-query)
- Compactor shuffle sharding

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Friedrich Gonzalez <1517449+friedrichg@users.noreply.github.com>

Author: friedrichg

docs/configuration/v1-guarantees.md

@@ -39,8 +39,6 @@ Currently experimental features are:
   - Evaluate rules to query frontend instead of ingesters (enabled via `-ruler.frontend-address`).
   - When `-ruler.frontend-address` is specified, the response format can be specified (via `-ruler.query-response-format`).
 - S3 Server Side Encryption (SSE) using KMS (including per-tenant KMS config overrides).
-- Azure blob storage.
-- Zone awareness based replication.
 - Ruler API (to PUT rules).
 - Alertmanager:
   - API (enabled via `-experimental.alertmanager.enable-api`)
@@ -51,31 +49,21 @@ Currently experimental features are:
 - gRPC Store.
 - TLS configuration in gRPC and HTTP clients.
 - TLS configuration in Etcd client.
-- Blocksconvert tools
 - OpenStack Swift storage support.
 - Metric relabeling in the distributor.
-- Scalable query-frontend (when using query-scheduler)
 - Ingester: do not unregister from ring on shutdown (`-ingester.unregister-on-shutdown=false`)
 - Distributor:
   - Do not extend writes on unhealthy ingesters (`-distributor.extend-writes=false`)
   - Accept multiple HA pairs in the same request (enabled via `-experimental.distributor.ha-tracker.mixed-ha-samples=true`)
   - Accept Prometheus remote write 2.0 request (`-distributor.remote-writev2-enabled=true`)
 - Tenant Deletion in Purger, for blocks storage.
-- Query-frontend: query stats tracking (`-frontend.query-stats-enabled`)
-- The block deletion marks migration support in the compactor (`-compactor.block-deletion-marks-migration-enabled`) is temporarily and will be removed in future versions
 - Blocks storage user index
 - Querier: tenant federation
   - `-tenant-federation.enabled`
   - `-tenant-federation.regex-matcher-enabled`
   - `-tenant-federation.user-sync-interval`
 - The thanosconvert tool for converting Thanos block metadata to Cortex
-- HA Tracker: cleanup of old replicas from KV Store.
 - Instance limits in ingester and distributor
-- Exemplar storage, currently in-memory only within the Ingester based on Prometheus exemplar storage (`-blocks-storage.tsdb.max-exemplars`)
-- Querier limits:
-  - `-querier.max-fetched-chunks-per-query`
-  - `-querier.max-fetched-chunk-bytes-per-query`
-  - `-querier.max-fetched-series-per-query`
 - Alertmanager limits
   - notification rate (`-alertmanager.notification-rate-limit` and `-alertmanager.notification-rate-limit-per-integration`)
   - dispatcher groups (`-alertmanager.max-dispatcher-aggregation-groups`)
@@ -96,8 +84,6 @@ Currently experimental features are:
   - `-alertmanager.sharding-ring.heartbeat-period=0`
   - `-compactor.ring.heartbeat-period=0`
   - `-store-gateway.sharding-ring.heartbeat-period=0`
-- Compactor shuffle sharding
-  - Enabled via `-compactor.sharding-enabled=true`, `-compactor.sharding-strategy=shuffle-sharding`, and `-compactor.tenant-shard-size` set to a value larger than 0.
 - Vertical sharding at query frontend for range/instant queries
   - `-frontend.query-vertical-shard-size` (int) CLI flag
   - `query_vertical_shard_size` (int) field in runtime config file