zlib: removed extra util require

PR-URL: nodejs#21069
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Kyle Farnung <kfarnung@microsoft.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: ErnestoSalazar

lib/zlib.js

@@ -30,6 +30,7 @@ const {
 const Transform = require('_stream_transform');
 const {
   _extend,
+  inherits,
   types: {
     isAnyArrayBuffer,
     isArrayBufferView
@@ -50,7 +51,6 @@ const {
   Z_DEFAULT_STRATEGY, Z_DEFAULT_WINDOWBITS, Z_DEFAULT_MEMLEVEL, Z_FIXED,
   DEFLATE, DEFLATERAW, INFLATE, INFLATERAW, GZIP, GUNZIP, UNZIP
 } = constants;
-const { inherits } = require('util');
 
 // translation table for return codes.
 const codes = {