well given as this is effectively an sql question, i always make sure i know the command direct into mysql before i worry about putting it into my php.
The delete query is:
$delete = "delete from table where condition";
so just run that as your query (ie mysql_query($delete)) and it will get rid of the row that contains the condition.
Just a note (and not a dig!) - people are usually keen for others to post code - but your code doesnt appear to have anything to do with your question, so you could have left it out! If it refers to the delete query that you're trying to run, then some indication of that might have been a good idea!