test: use mustNotCall in test-http-eof-on-connect

Confirm that callback is not being invoked in
test-http-eof-on-connect.js.

PR-URL: nodejs#13587
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-http-eof-on-connect.js

@@ -29,7 +29,7 @@ const http = require('http');
 // It is separate from test-http-malformed-request.js because it is only
 // reproduceable on the first packet on the first connection to a server.
 
-const server = http.createServer(common.noop);
+const server = http.createServer(common.mustNotCall());
 server.listen(0);
 
 server.on('listening', function() {