Where does MySQL's "show slave status" information come from?
That slave info is in RAM.
If you are running MySQL 5.6, run RESET SLAVE ALL;
If you are running MySQL 5.5, restart MySQL
If you are running MySQL 5.0/5.1, run the following:
STOP SLAVE;
CHANGE MASTER TO master_host='';

These are the ways to make the SHOW SLAVE STATUS\G disappear from view
GIVE IT A TRY !!!