fix(ci): remove nsp

Fixes #596
Fixes #597

.travis.yml

@@ -31,6 +31,7 @@ env:
   - CXX=g++-4.8 NODE_ENV=test DB=mysql
 
 before_install:
+  - npm i -g npm@6
   - npm config set spin false
 
 before_script:
@@ -41,4 +42,5 @@ before_script:
 script:
   - npm run outdated
   - npm test
-  - grunt nsp --force
+  # HACK: ignore npm audit errors for now until we get them all fixed
+  - npm audit || true

grunttasks/nsp.js

@@ -1,11 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-module.exports = function (grunt) {
-  grunt.config('nsp', {
-    output: 'summary',
-    package: grunt.file.readJSON('package.json'),
-    shrinkwrap: grunt.file.readJSON('npm-shrinkwrap.json')
-  });
-};