Remove unused screenshot plugin.

lib/units/device/plugins/screenshot.js

@@ -1,66 +0,0 @@
-var http = require('http')
-var util = require('util')
-
-var syrup = require('stf-syrup')
-var Promise = require('bluebird')
-
-var logger = require('../../../util/logger')
-var wire = require('../../../wire')
-var wireutil = require('../../../wire/util')
-
-module.exports = syrup.serial()
-  .dependency(require('../support/router'))
-  .dependency(require('../support/push'))
-  .dependency(require('../support/storage'))
-  .dependency(require('./display'))
-  .define(function(options, router, push, storage, display) {
-    var log = logger.createLogger('device:plugins:screenshot')
-    var plugin = Object.create(null)
-
-    plugin.capture = function() {
-      log.info('Capturing screenshot from %s', display.url)
-
-      return new Promise(function(resolve, reject) {
-        var req = http.get(display.url)
-
-        function responseListener(res) {
-          if (res.statusCode !== 200) {
-            reject(new Error(util.format(
-              'Screenshot capture failed: HTTP %d'
-            , res.statusCode
-            )))
-          }
-          else {
-            resolve(storage.store('image', res, {
-              filename: util.format('%s.jpg', options.serial)
-            , contentType: 'image/jpeg'
-            , knownLength: +res.headers['content-length']
-            }))
-          }
-        }
-
-        req.on('response', responseListener)
-        req.on('error', reject)
-      })
-    }
-
-    router.on(wire.ScreenCaptureMessage, function(channel) {
-      var reply = wireutil.reply(options.serial)
-      plugin.capture()
-        .then(function(file) {
-          push.send([
-            channel
-          , reply.okay('success', file)
-          ])
-        })
-        .catch(function(err) {
-          log.error('Screen capture failed', err.stack)
-          push.send([
-            channel
-          , reply.fail(err.message)
-          ])
-        })
-    })
-
-    return plugin
-  })