What do you mean my removing a VT from SP? As in VT stays created after SP is executed? Or you want to remove the usage of VT from SP?
HELP VOLATILE TABLE;
Will list the Volatile Tables that exist for the current session.
You can simply DROP TableName; for any volatile table you want to remove prior to disconnecting the session.
For information on both these statements, see: SQL Reference - Data Definition Language - Syntax & Examples
Thanks, for your help I see: SQL Reference - Data Definition Language - Syntax & Examples. Sorry for my english.