Revert "test: ensure message event fires in worker message port test"

This reverts commit 9790315.

Refs: #59952
PR-URL: #60126
Reviewed-By: Antoine du Hamel <[email protected]>

Author: lpinca

test/parallel/test-worker-message-port-infinite-message-loop.js

@@ -27,14 +27,3 @@ port2.postMessage(0);
 // This is part of the test -- the event loop should be available and not stall
 // out due to the recursive .postMessage() calls.
 setTimeout(common.mustCall(), 0);
-
-// Assert that the 'message' handler was actually called.
-//
-// We do not want to assert a specific call count, so common.mustCall cannot be
-// used in the port1.on('message' callback directly.
-process.once(
-  'beforeExit',
-  common.mustCall(() => {
-    assert(count > 0, 'count should be greater than 0');
-  })
-);