fix

Author: lua-vr

Mathlib/Order/ConditionallyCompleteLattice/Defs.lean

@@ -82,7 +82,6 @@ class ConditionallyCompleteLinearOrder (α : Type*)
     compareOfLessAndEq_rfl
 
 attribute [to_dual existing] ConditionallyCompleteLinearOrder.csSup_of_not_bddAbove
-attribute [to_dual existing] ConditionallyCompleteLinearOrder.csInf_of_not_bddBelow
 
 /-- A conditionally complete linear order with `Bot` is a linear order with least element, in which
 every nonempty subset which is bounded above has a supremum, and every nonempty subset (necessarily