Remove ForceDelete

src/elements.h

Index: src/elements.h
diff --git a/src/elements.h b/src/elements.h
index 05354eaccf1359509ac6189fd5208b94620a0f09..61ab1ad1b2b2971e3b41413b918d2fe2946b0fce 100644
--- a/src/elements.h
+++ b/src/elements.h
@@ -121,9 +121,7 @@ class ElementsAccessor {
 
   // Deletes an element in an object, returning a new elements backing store.
   MUST_USE_RESULT virtual MaybeHandle<Object> Delete(
-      Handle<JSObject> holder,
-      uint32_t key,
-      JSReceiver::DeleteMode mode) = 0;
+      Handle<JSObject> holder, uint32_t key, StrictMode strict_mode) = 0;
 
   // If kCopyToEnd is specified as the copy_size to CopyElements, it copies all
   // of elements from source after source_start to the destination array.