diff --git a/R/zzz.R b/R/zzz.R
index fbc9c756d9..8fd9ce1edd 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -23,9 +23,6 @@
   )
 }
 
-# Use non-exported function(s) from teal.slice.
-# This is a temporary measure and will be removed two release cycles from now (now meaning 0.13.0).
-list_to_teal_slices <- getFromNamespace("list_to_teal_slices", "teal.slice")
 # This one is here because setdiff_teal_slice should not be exported from teal.slice.
 setdiff_teal_slices <- getFromNamespace("setdiff_teal_slices", "teal.slice")
 # This one is here because it is needed by c.teal_slices but we don't want it exported from teal.slice.