test: remove test-ttywrap.writestream.js

The test is never run in CI and may have never worked.

Refs: #28304
PR-URL: #28316
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott