Removed “Authorise to take action about” (7)
I believe the answer is:
deleted
'removed' is the definition.
(deleting is a kind of removing)
'take action about' is the wordplay.
'take' becomes 'delete' (deleting is a kind of taking).
'action about' becomes 'd' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'delete'+'d'='DELETED'
'authorise to' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for deleted that I've seen before include "Effaced" , "Erased" , "Expunged" , "Struck out" , "Removed" .)