Revert "Speculative fix for crash in occlusion hit test for viz hit test data"

This reverts commit 404028ee.

Reason for revert: CHECK() added in this CL caused flaky crash in content_browsertests on Cast Linux:
- RenderFrameHostImplBeforeUnloadBrowserTest.RendererInitiatedNavigationInABAB
- SitePerProcessBrowserTest.Unload_ABAB

Example build: https://ci.chromium.org/p/chromium/builders/ci/Cast%20Linux/85787


Original change's description:
> Speculative fix for crash in occlusion hit test for viz hit test data
> 
> If a frame is throttled, then it may have dirty layout by the time
> PageAnimator::UpdateHitTestOcclusionData runs. There is no empirical
> evidence that render throttling is actually causing the crashes in the
> wild, so also add a diagnostic CHECK.
> 
> BUG=1035029
> R=​chrishtr@chromium.org
> 
> Change-Id: Ie8d1aa5d48cf94832616403e27965722b809020b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1972230
> Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
> Commit-Queue: Stefan Zager <szager@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#726170}

TBR=szager@chromium.org,chrishtr@chromium.org

Change-Id: Ib1a399fc231ba7c2e4d7c2c3269360246eac2ad2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1035029
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1975493Reviewed-by: Kunihiko Sakamoto <ksakamoto@chromium.org>
Commit-Queue: Kunihiko Sakamoto <ksakamoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726289}

third_party/blink/renderer/core/frame/remote_frame.cc

@@ -362,12 +362,6 @@ bool RemoteFrame::IsIgnoredForHitTest() const {
 void RemoteFrame::UpdateHitTestOcclusionData() {
   if (!cc_layer_ || !is_surface_layer_)
     return;
-  // If the parent LocalFrameView is render throttled, we may have stale layout
-  // information, so do nothing.
-  LocalFrameView* parent_view = View() ? View()->ParentFrameView() : nullptr;
-  if (!parent_view || parent_view->CanThrottleRendering())
-    return;
-  CHECK(!parent_view->NeedsLayout());
   bool unoccluded = false;
   if (base::FeatureList::IsEnabled(
           blink::features::kVizHitTestOcclusionCheck)) {