Removal of free social event (8)
I believe the answer is:
riddance
'removal' is the definition.
(I know that riddance is a type of removal)
'free social event' is the wordplay.
'free' becomes 'rid' (to be free of something is to be rid of it).
'social event' becomes 'dance' (I've seen this in another clue).
'rid'+'dance'='RIDDANCE'
'of' is the link.
(Other definitions for riddance that I've seen before include "'Good . . . . . . . . to bad rubbish'" , "disposal" , "Removal (that's usually good)" , "Elimination" , "Freedom" .)