test: remove unused parameter in test-next-tick-error-spin.js

PR-URL: #17185
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: FKSI

test/sequential/test-next-tick-error-spin.js

@@ -42,7 +42,7 @@ if (process.argv[2] !== 'child') {
   process.maxTickDepth = 10;
 
   // in the error handler, we trigger several MakeCallback events
-  d.on('error', function(e) {
+  d.on('error', function() {
     console.log('a');
     console.log('b');
     console.log('c');