http: remove useless ternary in test

PR-URL: #48481
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matthew Aitken <maitken033380023@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Qingyu Deng <i@ayase-lab.com>

test/parallel/test-http2-endafterheaders.js

@@ -9,7 +9,7 @@ const Countdown = require('../common/countdown');
 
 const server = http2.createServer();
 server.on('stream', common.mustCall((stream, headers) => {
-  const check = headers[':method'] === 'GET' ? true : false;
+  const check = headers[':method'] === 'GET';
   assert.strictEqual(stream.endAfterHeaders, check);
   stream.on('data', common.mustNotCall());
   stream.on('end', common.mustCall());