Revert "Skip code flushing tests failing on NumFuzz bots"

This reverts commit 12e0978d.

Reason for revert: Issues should be fixed by https://crrev.com/c/3123420

Original change's description:
> Skip code flushing tests failing on NumFuzz bots
>
> Bug: v8:12088
> Change-Id: Ibc4db95125d44eca110829f1c043e769de5bd349
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3123416
> Commit-Queue: Mythri Alle <mythria@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Auto-Submit: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76527}

Bug: v8:12088
Change-Id: I5fcf0f149028d34ade3aa5aabc2e8de73631cac2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3256551Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77660}

test/mjsunit/mjsunit.status

@@ -1075,8 +1075,6 @@
   'baseline/test-osr': [SKIP],
 
   # BUG(v8:11826) Skipped until we remove flakes on NumFuzz.
-  'baseline/flush-only-baseline-code': [SKIP],
-  'baseline/flush-baseline-code': [SKIP],
   'regress/wasm/regress-1231950': [SKIP],
 
   # BUG(v8:12013) Skipped until we remove flakes on NumFuzz.