Removes notes on steel production (7)
I believe the answer is:
deletes
'removes' is the definition.
(deleting is a kind of removing)
'notes on steel production' is the wordplay.
'notes' becomes 'de' (two musical notes).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'production' is an anagram indicator.
'steel' anagrammed gives 'letes'.
'de'+'letes'='DELETES'
(Other definitions for deletes that I've seen before include "Erases" , "Crosses out" .)