Remove reference to EAGERLY_FINALIZE from Api reference

Bug: 981043
Change-Id: Ie5f2181a6503224579b45f03686c6cb6482d19e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1697625Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676353}

third_party/blink/renderer/platform/heap/BlinkGCAPIReference.md

@@ -98,8 +98,7 @@ private:
 Note that finalization is done at an arbitrary time after the object becomes unreachable.
 
 Any destructor executed within the finalization period must not touch any other on-heap object, because destructors
-can be executed in any order. If there is a need of having such destructor, consider using
-[EAGERLY_FINALIZE](#EAGERLY_FINALIZE).
+can be executed in any order.
 
 Because `GarbageCollectedFinalized<T>` is a special case of `GarbageCollected<T>`, all the restrictions that apply
 to `GarbageCollected<T>` classes also apply to `GarbageCollectedFinalized<T>`.