Revert "Enable test for persistent overlays"

This reverts commit b37c27dc.

Reason for revert: the test is failing on many waterfall bots: https://bugs.chromium.org/p/chromium/issues/detail?id=1132945

Original change's description:
> Enable test for persistent overlays
>
> The test has been implemented in [1] and now, when DevTools rolled,
> it can be enabled.
>
> [1]: crrev.com/c/2400478
>
> Bug: 1109224
> Change-Id: I43e4dffbf7d50eae856b5c78290768079094ab69
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2435188
> Reviewed-by: Mathias Bynens <mathias@chromium.org>
> Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#811260}

TBR=mathias@chromium.org,alexrudenko@chromium.org

Change-Id: I2b94a3927529be3977c21c960b75d09b7e76ff79
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1109224, 1132945
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2435780Reviewed-by: Joey Arhar <jarhar@chromium.org>
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811312}

third_party/blink/web_tests/TestExpectations

@@ -1837,6 +1837,9 @@ crbug.com/1051044 external/wpt/css/filter-effects/effect-reference-feimage-003.h
 
 crbug.com/524160 [ Debug ] http/tests/media/media-source/stream_memory_tests/mediasource-appendbuffer-quota-exceeded-default-buffers.html [ Timeout ]
 
+# Awaiting DevTools roll.
+crbug.com/1109224 inspector-protocol/overlay/overlay-persistent-overlays.js [ Pass Failure ]
+
 # On these platforms (all but Android) media tests don't currently use gpu-accelerated (proprietary) codecs, so no
 # benefit to running them again with gpu acceleration enabled.
 crbug.com/555703 [ Linux ] virtual/media-gpu-accelerated/* [ Skip ]