diff --git a/misc.go b/misc.go
index fb22c21..96d43a1 100644
--- a/misc.go
+++ b/misc.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"slices"
-	"strings"
 	"unicode"
 )
 
@@ -159,17 +158,3 @@ func replaceByValue[T comparable](slc []T, toReplace T, replaceWith T) []T {
 	}
 	return slc
 }
-
-// swapCase swaps the case of every character in the given string, and returns
-// the new string.
-func swapCase(str string) string {
-	return strings.Map(func(r rune) rune {
-		switch {
-		case unicode.IsLower(r):
-			return unicode.ToUpper(r)
-		case unicode.IsUpper(r):
-			return unicode.ToLower(r)
-		}
-		return r
-	}, str)
-}