One getting rid of chemist (9)
I believe the answer is:
dispenser
This clue is a double definition.
'one getting rid of' is the first definition.
(someone dispensing with or getting rid of things)
'chemist' is the second definition.
(I've seen this before)
(Other definitions for dispenser that I've seen before include "Pharmacist" , "ATM" , "one to give out" , "Container releasing its contents in prescribed amounts" , "One filling prescription" .)