Order to get rid of (7)
I believe the answer is:
dispose
This clue is a double definition.
'order' is the first definition.
(thesaurus)
'get rid of' is the second definition.
(I've seen this in another clue)
'to' is the link.
(Other definitions for dispose that I've seen before include "Arrange - to get rid (of)" , "Spies do (anag) - get rid of" , "Place in order (as God does)" , "Place in order; bestow" , "make an arrangement" .)