1 files changed, 0 insertions, 40 deletions
diff --git a/internal/errors/is_go112.go b/internal/errors/is_go112.go
deleted file mode 100644
index fbcd3492..00000000
--- a/internal/errors/is_go112.go
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !go1.13
-// +build !go1.13
-
-package errors
-
-import "reflect"
-
-// Is is a copy of Go 1.13's errors.Is for use with older Go versions.
-func Is(err, target error) bool {
-	if target == nil {
-		return err == target
-	}
-
-	isComparable := reflect.TypeOf(target).Comparable()
-	for {
-		if isComparable && err == target {
-			return true
-		}
-		if x, ok := err.(interface{ Is(error) bool }); ok && x.Is(target) {
-			return true
-		}
-		if err = unwrap(err); err == nil {
-			return false
-		}
-	}
-}
-
-func unwrap(err error) error {
-	u, ok := err.(interface {
-		Unwrap() error
-	})
-	if !ok {
-		return nil
-	}
-	return u.Unwrap()
-}