Front I dispensed with, gone (8)
I believe the answer is:
vanished
'gone' is the definition.
(I've seen this in another clue)
'front i dispensed' is the wordplay.
'front' becomes 'van' (I've seen this before).
'dispensed' becomes 'shed' (I can't justify this - if you can you should give a lot more credence to this answer).
'van'+'i'+'shed'='VANISHED'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for vanished that I've seen before include "gone" , "disappeared from view" , "Disappeared without trace" , "disappeared from sight" .)