refactor(deps): remove unused readline2 dep (angular#4032)

Author: clydin

package.json

@@ -90,7 +90,6 @@
     "postcss-loader": "^0.9.1",
     "quick-temp": "0.1.5",
     "raw-loader": "^0.5.1",
-    "readline2": "0.1.1",
     "reflect-metadata": "^0.1.8",
     "remap-istanbul": "^0.6.4",
     "resolve": "^1.1.7",

packages/angular-cli/ember-cli/lib/ui/index.js

@@ -35,7 +35,6 @@ function UI(options) {
   var spinner = this.spinner = ora({ color: 'green' });
 
   this.through  = require('through');
-  this.readline = require('readline2');
 
   // Output stream
   this.actualOutputStream = options.outputStream;

packages/angular-cli/package.json

@@ -75,7 +75,6 @@
     "postcss-loader": "^0.9.1",
     "quick-temp": "0.1.5",
     "raw-loader": "^0.5.1",
-    "readline2": "0.1.1",
     "remap-istanbul": "^0.6.4",
     "resolve": "^1.1.7",
     "rimraf": "^2.5.3",