Update for duplicate

Author: MikeRayMSFT

docs/relational-databases/system-catalog-views/sys-external-data-sources-transact-sql.md

@@ -15,7 +15,6 @@ ms.author: carlrab
 monikerRange: ">=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||=sqlallproducts-allversions||>=sql-server-linux-2017||=azuresqldb-mi-current"
 ---
 # sys.external_data_sources (Transact-SQL)
-[!INCLUDE [sqlserver2016-asdb-asdbmi-asa-pdw](../../includes/applies-to-version/sqlserver2016-asdb-asdbmi-asa-pdw.md)]
 
 [!INCLUDE [sqlserver2016-asdb-asdbmi-asa-pdw](../../includes/applies-to-version/sqlserver2016-asdb-asdbmi-asa-pdw.md)]