[ic] Delete old KeyedLoadIC code

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index a3fa810a87e4e394b66006c812fbda5a61584474..8365d5dc80a3b184b9dbde197c4e5004777667cf 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -1464,9 +1464,6 @@ void Heap::MarkCompactEpilogue() {
 
 
 void Heap::MarkCompactPrologue() {
-  // At any old GC clear the keyed lookup cache to enable collection of unused
-  // maps.
-  isolate_->keyed_lookup_cache()->Clear();
   isolate_->context_slot_cache()->Clear();
   isolate_->descriptor_lookup_cache()->Clear();
   RegExpResultsCache::Clear(string_split_cache());
@@ -2887,9 +2884,6 @@ void Heap::CreateInitialObjects() {
 
   set_noscript_shared_function_infos(Smi::kZero);
 
-  // Initialize keyed lookup cache.
-  isolate_->keyed_lookup_cache()->Clear();
-
   // Initialize context slot cache.
   isolate_->context_slot_cache()->Clear();