Removed deer as diseased (6)
I believe the answer is:
erased
'removed' is the definition.
(to erase is to remove or delete)
'deer as diseased' is the wordplay.
'diseased' indicates anagramming the letters (I've seen this in other clues).
'deer'+'as'='deeras'
'deeras' is an anagram of 'ERASED'.
(Other definitions for erased that I've seen before include "Rubbed out, deleted" , "Rubbed out, expunged" , "Removed completely" , "Obliterated" , "removed recording" .)