diff --git a/R/internal.R b/R/internal.R
index 68ea62cd..552d9b45 100644
--- a/R/internal.R
+++ b/R/internal.R
@@ -14,9 +14,3 @@
 
   anyDuplicated(x)
 }
-
-# remove when no longer support R < 3.6.0
-str2lang <- function(text) {
-  ex <- parse(text = text, keep.source = FALSE)
-  ex[[1L]]
-}