a few more slow nacl imports that I missed

scripts/check-account-deletion.js

@@ -2,7 +2,7 @@
 const Fs = require('fs');
 const nThen = require('nthen');
 const Pinned = require('./pinned');
-const Nacl = require('tweetnacl');
+const Nacl = require('tweetnacl/nacl-fast');
 const Path = require('path');
 const Pins = require('../lib/pins');
 const Config = require('../lib/load-config');

scripts/generate-admin-keys.js

@@ -1,6 +1,6 @@
 /* jshint esversion: 6, node: true */
 
-const Nacl = require('tweetnacl');
+const Nacl = require('tweetnacl/nacl-fast');
 
 const keyPair = Nacl.box.keyPair();
 console.log("You've just generated a new key pair for your support mailbox.");