Remove global Buffer mention now handled as require wrapper

docs/tutorial/security.md

@@ -80,22 +80,3 @@ This is not bulletproof, but at the least, you should attempt the following:
 
 Again, this list merely minimizes the risk, it does not remove it. If your goal
 is to display a website, a browser will be a more secure option.
-
-## Buffer Global
-
-Node's [Buffer](https://nodejs.org/api/buffer.html) class is currently available
-as a global even when the `nodeintegration` attribute is not added. You can
-delete this in your app by doing the following in your `preload` script:
-
-```js
-delete global.Buffer
-```
-
-Deleting it may break Node modules used in your preload script and app since
-many libraries expect it to be a global instead of requiring it directly via:
-
-```js
-const {Buffer} = require('buffer')
-```
-
-The `Buffer` global may be removed in future major versions of Electron.