test: run eslint on test file and fix errors

This removes two entries from the eslint ignore file. One file does
not exist anymore and the other one could easily be fixed.

PR-URL: https://github.com/nodejs/node/pull/25009


Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>