Revert of Fix leaking AXNodeObjects when sub document detaches

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index aedb82cfd8d8e76b27f94995805b7fa7464715f8..67d2aade857ba3a23849345346db45b872b6a5fb 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -2185,13 +2185,8 @@
             frameHost()->chromeClient().focusedNodeChanged(oldFocusedElement.get(), nullptr);
     }
 
-    if (this == &axObjectCacheOwner()) {
+    if (this == &axObjectCacheOwner())
         clearAXObjectCache();
-    } else if (AXObjectCache* cache = existingAXObjectCache()) {
-        for (Node& node : NodeTraversal::descendantsOf(*this)) {
-            cache->remove(&node);
-        }
-    }
 
     m_layoutView = nullptr;
     ContainerNode::detach(context);