[ic] Remove outdated comments

Change-Id: I257cd745966cbd9ee87eb725b3f80fbf5bf40ca3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2423743Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70053}

src/ic/handler-configuration.cc

@@ -93,8 +93,6 @@ int InitPrototypeChecksImpl(Isolate* isolate, Handle<ICHandler> handler,
 // prototype chain from |lookup_start_object_map| till |holder| did not change.
 // If the |holder| is an empty handle then the full prototype chain is
 // checked.
-// Returns -1 if the handler has to be compiled or the number of prototype
-// checks otherwise.
 template <typename ICHandler>
 int GetHandlerDataSize(Isolate* isolate, Handle<Smi>* smi_handler,
                        Handle<Map> lookup_start_object_map,

src/ic/handler-configuration.h

@@ -159,7 +159,6 @@ class LoadHandler final : public DataHandler {
 
   // Creates a data handler that represents a prototype chain check followed
   // by given Smi-handler that encoded a load from the holder.
-  // Can be used only if GetPrototypeCheckCount() returns non negative value.
   static Handle<Object> LoadFromPrototype(
       Isolate* isolate, Handle<Map> receiver_map, Handle<JSReceiver> holder,
       Handle<Smi> smi_handler,