Deprecation of Ineffective MergeTree Settings in ClickHouse

Now the following MergeTree table-level settings: replicated_max_parallel_sends, replicated_max_parallel_sends_for_table, replicated_max_parallel_fetches, replicated_max_parallel_fetches_for_table do nothing. They never worked well and were replaced with max_replicated_fetches_network_bandwidth, max_replicated_sends_network_bandwidth and background_fetches_pool_size. #28404 (alesapin).