remove unused requires

src/provision.js

@@ -7,8 +7,7 @@ exports = module.exports = {
     getStatus: getStatus
 };
 
-var appstore = require('./appstore.js'),
-    assert = require('assert'),
+var assert = require('assert'),
     async = require('async'),
     backups = require('./backups.js'),
     BoxError = require('./boxerror.js'),
@@ -17,10 +16,7 @@ var appstore = require('./appstore.js'),
     debug = require('debug')('box:provision'),
     domains = require('./domains.js'),
     eventlog = require('./eventlog.js'),
-    fs = require('fs'),
     mail = require('./mail.js'),
-    paths = require('./paths.js'),
-    safe = require('safetydance'),
     semver = require('semver'),
     settings = require('./settings.js'),
     sysinfo = require('./sysinfo.js'),