Remove IP addresses from "sneaky" link detection

js/modules/link_previews.js

@@ -1,7 +1,6 @@
 /* global URL */
 
 const { isNumber, compact, isEmpty } = require('lodash');
-const { isIP } = require('net');
 const nodeUrl = require('url');
 const LinkifyIt = require('linkify-it');
 
@@ -99,11 +98,6 @@ function isLinkSneaky(link) {
     return true;
   }
 
-  // Domain cannot be an IP address.
-  if (isIP(domain)) {
-    return true;
-  }
-
   // There must be at least 2 domain labels, and none of them can be empty.
   const labels = domain.split('.');
   if (labels.length < 2 || labels.some(isEmpty)) {