Remove outdated Windows elevation mechanism

This functionality is outdated and not using anymore due to limitations
in the way it was addressed.

The module and dependencies are removed for now, and will be added back
in the future, once a better approach is planned.

build/elevate.js

@@ -1,25 +0,0 @@
-(function() {
-  var _, isWindows, os, path;
-
-  _ = require('lodash');
-
-  os = require('os');
-
-  path = require('path');
-
-  isWindows = function() {
-    return os.platform() === 'win32';
-  };
-
-  exports.shouldElevate = function(error) {
-    return _.all([isWindows(), error.code === 'EPERM' || error.code === 'EACCES']);
-  };
-
-  exports.run = function(command) {
-    if (!isWindows()) {
-      return;
-    }
-    return require('windosu').exec(command);
-  };
-
-}).call(this);

lib/elevate.coffee

@@ -1,16 +0,0 @@
-_ = require('lodash')
-os = require('os')
-path = require('path')
-
-isWindows = ->
-	return os.platform() is 'win32'
-
-exports.shouldElevate = (error) ->
-	return _.all [
-		isWindows()
-		error.code is 'EPERM' or error.code is 'EACCES'
-	]
-
-exports.run = (command) ->
-	return if not isWindows()
-	require('windosu').exec(command)

package.json

@@ -23,9 +23,6 @@
   ],
   "author": "Juan Cruz Viotti <juanchiviotti@gmail.com>",
   "license": "MIT",
-  "optionalDependencies": {
-    "windosu": "^0.1.3"
-  },
   "devDependencies": {
     "chai": "^3.0.0",
     "ent": "^2.2.0",