sp_dropapprole (Transact-SQL)
Applies to: 
SQL Server
Removes an application role from the current database.
Important
This feature will be removed in a future version of SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use DROP APPLICATION ROLE instead.
Transact-SQL syntax conventions
Syntax
sp_dropapprole [ @rolename = ] N'rolename'
[ ; ]
Arguments
[ @rolename = ] N'rolename'
The application role to remove. @rolename is sysname, with no default. @rolename must exist in the current database.
Return code values
0 (success) or 1 (failure).
Remarks
sp_dropapprole can only be used to remove application roles. If a role owns any securables, the role can't be dropped. Before dropping an application role that owns securables, you must first transfer ownership of the securables, or drop them.
sp_dropapprole can't be executed within a user-defined transaction.
Permissions
Requires ALTER ANY APPLICATION ROLE permission on the database.
Examples
The following example removes the SalesApp application role from the current database.
EXEC sp_dropapprole 'SalesApp';