test: remove obsolete eslint comments

The surrounding code was updated, making these eslint-disable
comments obsolete.

PR-URL: https://github.com/nodejs/node/pull/25088
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/js-native-api/test_general/testInstanceOf.js

@@ -5,7 +5,6 @@ const common = require('../../common');
 const assert = require('assert');
 
 // Addon is referenced through the eval expression in testFile
-// eslint-disable-next-line no-unused-vars
 const addon = require(`./build/${common.buildType}/test_general`);
 const path = require('path');
 

test/parallel/test-require-extensions-same-filename-as-dir-trailing-slash.js

@@ -19,7 +19,6 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-/* eslint-disable max-len */
 'use strict';
 require('../common');
 const assert = require('assert');