Remove Runtime_PromiseMarkAsHandled

Bug: none
Change-Id: Icbc00fcdba6e408f34ac487b05e36deb71976e11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3001357
Commit-Queue: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Auto-Submit: Yang Guo <yangguo@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75550}

src/runtime/runtime-promise.cc

@@ -112,15 +112,6 @@ RUNTIME_FUNCTION(Runtime_PromiseStatus) {
   return Smi::FromInt(promise->status());
 }
 
-RUNTIME_FUNCTION(Runtime_PromiseMarkAsHandled) {
-  SealHandleScope shs(isolate);
-  DCHECK_EQ(1, args.length());
-  CONVERT_ARG_CHECKED(JSPromise, promise, 0);
-
-  promise.set_has_handler(true);
-  return ReadOnlyRoots(isolate).undefined_value();
-}
-
 RUNTIME_FUNCTION(Runtime_PromiseHookInit) {
   HandleScope scope(isolate);
   DCHECK_EQ(2, args.length());

src/runtime/runtime.h

@@ -375,7 +375,6 @@ namespace internal {
   F(PromiseHookInit, 2, 1)               \
   F(AwaitPromisesInit, 5, 1)             \
   F(AwaitPromisesInitOld, 5, 1)          \
-  F(PromiseMarkAsHandled, 1, 1)          \
   F(PromiseRejectEventFromStack, 2, 1)   \
   F(PromiseRevokeReject, 1, 1)           \
   F(PromiseStatus, 1, 1)                 \