Keep reference algorithms in tests

internal/engine/path.go

@@ -155,18 +155,6 @@ func pathIndexSpellingEqual(index int, token string) bool {
 	return true
 }
 
-func pathSpellingEqual(left, right Path) bool {
-	if len(left.segments) != len(right.segments) {
-		return false
-	}
-	for i, segment := range left.segments {
-		if !pathTokenSpellingEqual(segment, right.segments[i]) {
-			return false
-		}
-	}
-	return true
-}
-
 func escapePathToken(token string) string {
 	token = strings.ReplaceAll(token, "~", "~0")
 	return strings.ReplaceAll(token, "/", "~1")