test: remove orphaned entries from status

PR-URL: #18092
Backport-PR-URL: #19043
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

Author: kfarnung

test/known_issues/known_issues.status

@@ -7,8 +7,6 @@ prefix known_issues
 [true] # This section applies to all platforms
 
 [$system==win32]
-test-stdout-buffer-flush-on-exit: SKIP
-test-cluster-disconnect-handles: SKIP
 
 [$system==linux]