Removing hydra limitation that was fixed

This limitation is not accurate anymore: https://clickhouse-inc.slack.com/archives/C06JN3L6VPG/p1760724027207419?thread_ts=1760049622.100589&cid=C06JN3L6VPG

Author: kapustor

docs/cloud/features/04_infrastructure/warehouses.md

@@ -139,8 +139,6 @@ CREATE DATABASE db_test_ddl_single_query_setting
 SETTINGS distributed_ddl_task_timeout=0
 ```
 
-6. **In very rare cases, secondary services that are idled or stopped for a long time (days) without waking/starting up can cause performance degradation to other services in the same warehouse.** This issue will be resolved soon and is connected to mutations running in the background. If you think you are experiencing this issue, please contact ClickHouse [Support](https://clickhouse.com/support/program).
-
 7. **Currently there is a soft limit of 5 services per warehouse.** Contact the support team if you need more than 5 services in a single warehouse.
 
 ## Pricing {#pricing}