The DROP PROCEDURE statement removes stored procedures from the current database.
If a stored procedure that has been dropped is called by another stored procedure, SQL Server displays an error message. However, if a new procedure of the same name is defined to replace the one that was dropped, other procedures that reference it can call it successfully.
A procedure group (more than one procedure with the same name but different ;number suffixes) can be dropped with a single DROP PROCEDURE statement. Once procedures have been grouped, procedures within the group cannot be dropped individually.
To drop a stored procedure(For details, search for stored procedures in SQL Enterprise Manager Help.)
Or
For example:
DROP PROCEDURE mary_proc
drops the mary_proc procedure from the preceding section.
(For details, see the DROP PROCEDURE statement in the Microsoft SQL Server Transact-SQL Reference.)