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-rw-r--r--srfi/srfi-1.scm3
1 files changed, 0 insertions, 3 deletions
diff --git a/srfi/srfi-1.scm b/srfi/srfi-1.scm
index f42e0c86e..352807cbb 100644
--- a/srfi/srfi-1.scm
+++ b/srfi/srfi-1.scm
@@ -588,9 +588,6 @@
(define (lset-intersection! = list1 . rest)
(apply lset-intersection = list1 rest)) ; XXX:optimize
-(define (lset-difference! = list1 . rest)
- (apply lset-difference = list1 rest)) ; XXX:optimize
-
(define (lset-xor! = . rest)
(apply lset-xor = rest)) ; XXX:optimize