Use promisfied fs API from lib/fs

lib/util/utimes.js

@@ -1,11 +1,6 @@
 'use strict'
 
-const fs = require('graceful-fs')
-const { promisify } = require('util')
-
-const open = promisify(fs.open)
-const futimes = promisify(fs.futimes)
-const close = promisify(fs.close)
+const fs = require('../fs')
 
 // TODO: remove `utimesMillis` once all internal usage has switched to the Promise-based `utimesMillisAsync` API
 function utimesMillis (path, atime, mtime, callback) {
@@ -22,19 +17,19 @@ function utimesMillis (path, atime, mtime, callback) {
 
 async function utimesMillisAsync (path, atime, mtime) {
   // if (!HAS_MILLIS_RES) return fs.utimes(path, atime, mtime, callback)
-  const fd = await open(path, 'r+')
+  const fd = await fs.open(path, 'r+')
 
   let futimesErr = null
   try {
-    await futimes(fd, atime, mtime)
+    await fs.futimes(fd, atime, mtime)
   } catch (e) {
     futimesErr = e
   }
 
   let closeErr = null
 
   try {
-    await close(fd)
+    await fs.close(fd)
   } catch (e) {
     closeErr = e
   }