Removed oembed-parser from overrides

- oembed-parser no longer depends on promise-wtf (it's now an archived project)
- therefore the reason for having this here is goooooone

core/server/overrides.js

@@ -18,14 +18,6 @@ if (isSQLite) {
 
 const moment = require('moment-timezone');
 
-/**
- * oembed-parser uses promise-wtf to extend the global Promise with .finally
- *   - require it before global Bluebird Promise override so that promise-wtf
- *     doesn't error due to Bluebird's Promise already having a .finally
- *   - https://github.com/ndaidong/promise-wtf/issues/25
- */
-const {extract, hasProvider} = require('oembed-parser'); // eslint-disable-line
-
 /**
  * force UTC
  *   - you can require moment or moment-timezone, both is configured to UTC