Remove the eslint-plugin-{fetch-options,html} dependencies

The plugins have originally been introduced in commit d63da81 for the
`eslint-plugin-mozilla` dependency, but the `eslint-plugin-mozilla`
plugin got removed in commit be93d53 and we also don't use the plugins
ourselves in e.g. our `.eslintrc` files (as evidenced by `npx gulp lint`
not failing while it does fail if we remove any of the other plugins).

package.json

@@ -17,8 +17,6 @@
     "core-js": "^3.38.1",
     "eslint": "^8.57.1",
     "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-fetch-options": "^0.0.5",
-    "eslint-plugin-html": "^8.1.2",
     "eslint-plugin-import": "^2.31.0",
     "eslint-plugin-jasmine": "^4.2.2",
     "eslint-plugin-json": "^3.1.0",