Removes tramps around park getting high (5,3)
I believe the answer is:
bumps off
'removes' is the definition.
('bump off' can be a synonym of 'remove')
'tramps around park getting high' is the wordplay.
'tramps' becomes 'bums' ('bum' can be a synonym of 'tramp').
'around' indicates putting letters inside.
'park getting' becomes 'p' (I can't explain this - if you can you should give a lot more credence to this answer).
'high' becomes 'off' (I've seen this in other clues).
'bums' going around 'p' is 'bumps'.
'bumps'+'off'='BUMPS OFF'
Can you help me to learn more?
(Another definition for bumps off that I've seen is " murders".)