Update SampleDB.sql

Author: jovanpop-msft

SQL/Samples/LdwSample/SampleDB.sql

@@ -69,12 +69,6 @@ IF EXISTS
    DROP DATABASE SCOPED CREDENTIAL [sqlondemand]
 GO
 
-IF EXISTS
-   (SELECT * FROM sys.database_scoped_credentials
-   WHERE name = 'AadIdentity')
-   DROP DATABASE SCOPED CREDENTIAL [AadIdentity]
-GO
-
 IF EXISTS
    (SELECT * FROM sys.database_scoped_credentials
    WHERE name = 'WorkspaceIdentity')
@@ -93,9 +87,6 @@ CREATE DATABASE SCOPED CREDENTIAL [sqlondemand]
 WITH IDENTITY='SHARED ACCESS SIGNATURE',  
 SECRET = 'sv=2018-03-28&ss=bf&srt=sco&sp=rl&st=2019-10-14T12%3A10%3A25Z&se=2061-12-31T12%3A10%3A00Z&sig=KlSU2ullCscyTS0An0nozEpo4tO5JAgGBvw%2FJX2lguw%3D'
 GO
--- Create credential that will allow AAD user to impersonate
-CREATE DATABASE SCOPED CREDENTIAL AadIdentity WITH IDENTITY = 'User Identity'
-GO
 -- Create credential that will allow user to impersonate using Managed Identity assigned to workspace
 CREATE DATABASE SCOPED CREDENTIAL WorkspaceIdentity WITH IDENTITY = 'Managed Identity'
 GO
@@ -130,7 +121,7 @@ WITH ( LOCATION = 'https://azureopendatastorage.blob.core.windows.net/nyctlc/yel
 GO
 CREATE EXTERNAL DATA SOURCE GreenTaxi
 WITH ( LOCATION = 'https://azureopendatastorage.blob.core.windows.net/nyctlc/green/')
-
+GO
 
 CREATE EXTERNAL FILE FORMAT QuotedCsvWithHeader
 WITH (