Removes from the post bags (5)
I believe the answer is:
sacks
This clue could be a double definition.
'removes' is the first definition.
(sacking is a kind of removing)
'post bags' is the second definition.
'sacks' can be an answer for 'bags' (sack is a kind of bag). I'm not certain of the 'post' bit.
'from the' acts as a link.
Can you help me to learn more?
(Other definitions for sacks that I've seen before include "Terminates employment as punishment" , "sends up in flames" , "Dismisses; bags" , "Large strong bags" , "Plunders; bags" .)