Update CODEOWNERS for System.Data and System.Data.SqlClient

Author: David-Engel

.github/CODEOWNERS

@@ -25,10 +25,10 @@
 /xml/System.Activities*/ @dotnet/docs
 /xml/System.AddIn*/ @dotnet/docs
 /xml/System.ComponentModel.DataAnnotations*/ @ajcvickers
-/xml/System.Data*/ @ajcvickers @david-engel @JRahnama
+/xml/System.Data*/ @ajcvickers
 /xml/System.Data.Odbc/ @ajcvickers
 /xml/System.Data.OleDb/ @ajcvickers
-/xml/System.Data.SqlClient/ @david-engel @JRahnama
+/xml/System.Data.SqlClient/ @david-engel @cheenamalhotra
 /xml/System.Deployment*/ @dotnet/docs
 /xml/System.Device*/ @dotnet/docs
 /xml/System.Dynamic*/ @dotnet/docs