Remove, wipe out (5)
I believe the answer is:
erase
This clue is a double definition.
'remove' is the first definition.
(to erase is to remove)
'wipe out' is the second definition.
(I know that wipe out can be written as erase)
(Other definitions for erase that I've seen before include "Efface" , "Remove all traces of" , "Put out of mind" , "Remove permanently" , "Remove from memory" .)