So the answer does exactly what was asked.
Yup, it does. IMHO another of the things that can be done that usually should not be done. . .
On well-managed/administered systems, data is not deleted (or otherwise modified) without proper footprints.
I've been some places where doing something like this in Production was grounds for termination. . .
If this is some little set of test data that has not been properly controlled to prevent duplicates, i've no problem with a quick spufi fix. I'd strongly suggest that the production system be made "duplicate-proof". Wth the current situation, how would the proper duplicate be kept and the other(s) discarded? If this is just test data, it may not matter. If there is different content in the duplicates it may be less than trivial for "real" data. . .