We don't need to verify npm version

We have defaulted to using npm that installed as part of the script
dependancies. This is to increase predictability on what version of npm
was used to install atom dependencies

Author: sadick254

script/config.js

@@ -3,7 +3,6 @@
 
 'use strict';
 
-const fs = require('fs');
 const path = require('path');
 const spawnSync = require('./lib/spawn-sync');
 
@@ -77,7 +76,7 @@ function getAppName(channel) {
   return channel === 'stable'
     ? 'Atom'
     : `Atom ${process.env.ATOM_CHANNEL_DISPLAY_NAME ||
-    channel.charAt(0).toUpperCase() + channel.slice(1)}`;
+        channel.charAt(0).toUpperCase() + channel.slice(1)}`;
 }
 
 function getExecutableName(channel, appName) {

script/lib/verify-machine-requirements.js

@@ -3,11 +3,8 @@
 const childProcess = require('child_process');
 const path = require('path');
 
-const CONFIG = require('../config');
-
 module.exports = function(ci) {
   verifyNode();
-  // verifyNpm(ci);
   verifyPython();
 };
 
@@ -24,24 +21,6 @@ function verifyNode() {
   }
 }
 
-function verifyNpm(ci) {
-  const stdout = childProcess.execFileSync(
-    CONFIG.getNpmBinPath(ci),
-    ['--version'],
-    { env: process.env }
-  );
-  const fullVersion = stdout.toString().trim();
-  const majorVersion = fullVersion.split('.')[0];
-  const oldestMajorVersionSupported = ci ? 6 : 3;
-  if (majorVersion >= oldestMajorVersionSupported) {
-    console.log(`Npm:\tv${fullVersion}`);
-  } else {
-    throw new Error(
-      `npm v${oldestMajorVersionSupported}+ is required to build Atom. npm v${fullVersion} was detected.`
-    );
-  }
-}
-
 function verifyPython() {
   // This function essentially re-implements node-gyp's "find-python.js" library,
   // but in a synchronous, bootstrap-script-friendly way.