test: test-crypto-prime.js doesn't need internals

PR-URL: https://github.com/nodejs/node/pull/56675
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-crypto-prime.js

@@ -1,4 +1,3 @@
-// Flags: --expose-internals
 'use strict';
 
 const common = require('../common');