chore(build): remove unused build/util

tools/build/util.js

@@ -1,83 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-var fs = require('fs');
-var minimatch = require('minimatch');
-var path = require('path');
-var Q = require('q');
-
-module.exports = {
-  processToPromise: processToPromise,
-  streamToPromise: streamToPromise,
-  filterByFile: filterByFile,
-  subDirs: subDirs,
-  forEachSubDir: forEachSubDir,
-  forEachSubDirSequential: forEachSubDirSequential
-};
-
-function subDirs(dir) {
-  return fs.readdirSync(dir).filter(function(file) {
-    return fs.statSync(path.join(dir, file)).isDirectory();
-  });
-}
-
-function forEachSubDir(dir, callback) {
-  var dirs = subDirs(dir);
-  return Q.all(dirs.map(function(subdir) { return callback(path.join(dir, subdir)); }));
-}
-
-function forEachSubDirSequential(dir, callback) {
-  var dirs = subDirs(dir);
-  return next(0);
-
-  function next(index) {
-    if (index < dirs.length) {
-      return callback(path.join(dir, dirs[index])).then(function() { return next(index + 1); });
-    } else {
-      return true;
-    }
-  }
-}
-
-function processToPromise(process) {
-  var defer = Q.defer();
-  process.on('close', function(code) {
-    if (code) {
-      defer.reject(code);
-    } else {
-      defer.resolve();
-    }
-  });
-  return defer.promise;
-}
-
-function streamToPromise(stream) {
-  var defer = Q.defer();
-  stream.on('end', defer.resolve);
-  stream.on('error', defer.reject);
-  return defer.promise;
-}
-
-function filterByFile(pathMapping, folder) {
-  var folderParts = folder.split(path.sep);
-  var match;
-  var lastPattern;
-  for (var pattern in pathMapping) {
-    if (minimatch(folder, pattern)) {
-      if (!lastPattern || lastPattern.length < pattern.length) {
-        match = pathMapping[pattern];
-        lastPattern = pattern;
-      }
-    }
-  }
-  if (match !== undefined) {
-    return match;
-  } else {
-    throw new Error('No entry for folder ' + folder + ' found in ' + JSON.stringify(pathMapping));
-  }
-}