## Function: COMMON-LISP:REMOVE-DUPLICATES
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> The elements of SEQUENCE are compared pairwise, and if any two match,
> the one occurring earlier is discarded, unless FROM-END is true, in
> which case the one later in the sequence is discarded. The resulting
> sequence is returned.
> 
> The :TEST-NOT argument is deprecated.

### Lambda list
```cl
(sequence &rest sb-impl::args &key sb-impl::test sb-impl::test-not sb-impl::start
 sb-impl::end sb-impl::from-end sb-impl::key)
```