test: remove unnecessary skipIfWorker()

test-inspector-port-cluster passes in workers. Remove skipIfWorker()
from the test.

PR-URL: #25427
Reviewed-By: Eugene Ostroukhov <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: Trott

test/sequential/test-inspector-port-cluster.js

@@ -3,7 +3,6 @@
 const common = require('../common');
 
 common.skipIfInspectorDisabled();
-common.skipIfWorker();
 
 const assert = require('assert');
 const cluster = require('cluster');