diff --git a/src/node.h b/src/node.h
index 7fbbdb7ea23601..c97b4256559add 100644
--- a/src/node.h
+++ b/src/node.h
@@ -295,11 +295,6 @@ class NODE_EXTERN MultiIsolatePlatform : public v8::Platform {
   virtual bool FlushForegroundTasks(v8::Isolate* isolate) = 0;
   virtual void DrainTasks(v8::Isolate* isolate) = 0;
 
-  // TODO(addaleax): Remove this, it is unnecessary.
-  // This would currently be called before `UnregisterIsolate()` but will be
-  // folded into it in the future.
-  virtual void CancelPendingDelayedTasks(v8::Isolate* isolate);
-
   // This needs to be called between the calls to `Isolate::Allocate()` and
   // `Isolate::Initialize()`, so that initialization can already start
   // using the platform.
diff --git a/src/node_platform.cc b/src/node_platform.cc
index 1b6129596ac6a8..c5bdc4d33cc9ca 100644
--- a/src/node_platform.cc
+++ b/src/node_platform.cc
@@ -609,6 +609,4 @@ std::queue<std::unique_ptr<T>> TaskQueue<T>::PopAll() {
   return result;
 }
 
-void MultiIsolatePlatform::CancelPendingDelayedTasks(Isolate* isolate) {}
-
 }  // namespace node