--- a/vendor/golang.org/x/sys/unix/openbsd_pledge.go	Wed Sep 18 19:17:42 2019 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,95 +0,0 @@
-// Copyright 2016 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.
-
-// +build openbsd
-// +build 386 amd64 arm
-
-package unix
-
-import (
-	"errors"
-	"fmt"
-	"strconv"
-	"syscall"
-	"unsafe"
-)
-
-const (
-	_SYS_PLEDGE = 108
-)
-
-// Pledge implements the pledge syscall.
-//
-// The pledge syscall does not accept execpromises on OpenBSD releases
-// before 6.3.
-//
-// execpromises must be empty when Pledge is called on OpenBSD
-// releases predating 6.3, otherwise an error will be returned.
-//
-// For more information see pledge(2).
-func Pledge(promises, execpromises string) error {
-	maj, min, err := majmin()
-	if err != nil {
-		return err
-	}
-
-	// If OpenBSD <= 5.9, pledge is not available.
-	if (maj == 5 && min != 9) || maj < 5 {
-		return fmt.Errorf("pledge syscall is not available on OpenBSD %d.%d", maj, min)
-	}
-
-	// If OpenBSD <= 6.2 and execpromises is not empty
-	// return an error - execpromises is not available before 6.3
-	if (maj < 6 || (maj == 6 && min <= 2)) && execpromises != "" {
-		return fmt.Errorf("cannot use execpromises on OpenBSD %d.%d", maj, min)
-	}
-
-	pptr, err := syscall.BytePtrFromString(promises)
-	if err != nil {
-		return err
-	}
-
-	// This variable will hold either a nil unsafe.Pointer or
-	// an unsafe.Pointer to a string (execpromises).
-	var expr unsafe.Pointer
-
-	// If we're running on OpenBSD > 6.2, pass execpromises to the syscall.
-	if maj > 6 || (maj == 6 && min > 2) {
-		exptr, err := syscall.BytePtrFromString(execpromises)
-		if err != nil {
-			return err
-		}
-		expr = unsafe.Pointer(exptr)
-	}
-
-	_, _, e := syscall.Syscall(_SYS_PLEDGE, uintptr(unsafe.Pointer(pptr)), uintptr(expr), 0)
-	if e != 0 {
-		return e
-	}
-
-	return nil
-}
-
-// majmin returns major and minor version number for an OpenBSD system.
-func majmin() (major int, minor int, err error) {
-	var v Utsname
-	err = Uname(&v)
-	if err != nil {
-		return
-	}
-
-	major, err = strconv.Atoi(string(v.Release[0]))
-	if err != nil {
-		err = errors.New("cannot parse major version number returned by uname")
-		return
-	}
-
-	minor, err = strconv.Atoi(string(v.Release[2]))
-	if err != nil {
-		err = errors.New("cannot parse minor version number returned by uname")
-		return
-	}
-
-	return
-}