vendor: update all dependencies

vendor/golang.org/x/sys/unix/syscall_unix.go

@@ -8,7 +8,6 @@ package unix
 
 import (
 	"bytes"
-	"runtime"
 	"sort"
 	"sync"
 	"syscall"
@@ -21,13 +20,6 @@ var (
 	Stderr = 2
 )
 
-const (
-	darwin64Bit    = runtime.GOOS == "darwin" && SizeofPtr == 8
-	dragonfly64Bit = runtime.GOOS == "dragonfly" && SizeofPtr == 8
-	netbsd32Bit    = runtime.GOOS == "netbsd" && SizeofPtr == 4
-	solaris64Bit   = runtime.GOOS == "solaris" && SizeofPtr == 8
-)
-
 // Do the interface allocations only once for common
 // Errno values.
 var (
@@ -359,13 +351,6 @@ func Socketpair(domain, typ, proto int) (fd [2]int, err error) {
 	return
 }
 
-func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
-	if raceenabled {
-		raceReleaseMerge(unsafe.Pointer(&ioSync))
-	}
-	return sendfile(outfd, infd, offset, count)
-}
-
 var ioSync int64
 
 func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) }