test: un-set inspector-async-hook-setup-at-inspect-brk as flaky

There was a commit that got merged that should have fixed the issue

ref: #50222 (comment)
PR-URL: #53692
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: abmusse

test/parallel/parallel.status

@@ -103,10 +103,6 @@ test-http-pipeline-flood: SKIP
 # https://github.com/nodejs/node/issues/39655
 test-cluster-primary-error: PASS, FLAKY
 
-[$arch==s390x]
-# https://github.com/nodejs/node/issues/50222
-test-inspector-async-hook-setup-at-inspect-brk: PASS, FLAKY
-
 [$arch==loong64]
 # https://github.com/nodejs/node/issues/51662
 test-http-correct-hostname: SKIP