Remove additional court (7)
I believe the answer is:
extract
'remove' is the definition.
(I know that extract is a kind of remove)
'additional court' is the wordplay.
'additional' becomes 'extra' (extra means additional or surplus).
'court' becomes 'ct' (abbreviation used in road names).
'extra'+'ct'='EXTRACT'
(Other definitions for extract that I've seen before include "Remove - piece" , "Citation" , "Draw out by force" , "Determine the value of" , "Short piece" .)