test: remove obsolete eslint-disable comment

The align-function-arguments custom rule is obsolete and has been
removed from the code base. Remove comment that used to disable it for
one file.

PR-URL: https://github.com/nodejs/node/pull/11643
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>

test/parallel/test-http-parser-bad-ref.js

@@ -75,12 +75,10 @@ demoBug('POST /1', '/22 HTTP/1.1\r\n' +
         'Content-Length: 4\r\n\r\n' +
         'pong');
 
-/* eslint-disable align-function-arguments */
 demoBug('POST /1/22 HTTP/1.1\r\n' +
         'Content-Type: tex', 't/plain\r\n' +
         'Content-Length: 4\r\n\r\n' +
         'pong');
-/* eslint-enable align-function-arguments */
 
 process.on('exit', function() {
   assert.strictEqual(2, headersComplete);