Unused eslint directives are not detected

[javagl]

There are a few eslint-disable... directives that are unused. They are detected by VSCode, but apparently, don't cause any problem in CI:

One way to check for them is to change the eslint call to include --report-unused-disable-directives, as in

"eslint": "eslint \"./**/*.*js\" \"./**/*.html\" --cache --quiet --report-unused-disable-directives",

But preferably, this should be included somewhere in https://github.com/CesiumGS/eslint-config-cesium .

The documentation mentions this:

To report unused eslint-disable comments, use the reportUnusedDisableDirectives setting. For example:

export default [
    {
        linterOptions: {
            reportUnusedDisableDirectives: "error"
        }
    }
];

So it might be trivial to add this for someone who knows the right place.

---

Running eslint with --report-unused-disable-directives currently generates 149 messages 😬 But it looks like they can all be fixed automatically with --fix. So this could easily be done as a one-shot cleanup.

(Some of them are about to be fixed as part of another PR, so it could make sense for this PR to be merged before doing that cleanup pass)