DOCS-15876-remove-chunkMigrationConcurrency (#2688)

Co-authored-by: jason-price-mongodb <[email protected]>

Author: jason-price-mongodb

source/reference/command/serverStatus.txt

@@ -4287,7 +4287,7 @@ shardingStatistics
 
    *Only present when run on a shard.*
 
-   *Available starting in MongoDB 6.3 (and 6.0.5 and 5.0.15).*
+   *Available starting in MongoDB 6.3 (and 5.0.15).*
 
 .. serverstatus:: shardingStatistics.catalogCache
 

source/reference/parameters.txt

@@ -3013,7 +3013,7 @@ Sharding Parameters
 
 .. parameter:: chunkMigrationConcurrency
 
-   *Available starting in MongoDB 6.3 (and 6.0.5 and 5.0.15).*
+   *Available starting in MongoDB 6.3 (and 5.0.15).*
 
    *Type*: integer