Revert of Reland [heap] Avoid the use of cells to point from code to new-space objects.

src/heap/remembered-set.cc

Index: src/heap/remembered-set.cc
diff --git a/src/heap/remembered-set.cc b/src/heap/remembered-set.cc
index 6e27c288cf69cafae6fb7a0a06f5b23ee2ecad1e..0bc5e6e32401de0e4566cf81e37e9d23ab67ab04 100644
--- a/src/heap/remembered-set.cc
+++ b/src/heap/remembered-set.cc
@@ -9,7 +9,6 @@
 #include "src/heap/slot-set.h"
 #include "src/heap/spaces.h"
 #include "src/heap/store-buffer.h"
-#include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
@@ -24,19 +23,6 @@
         Object** slot = reinterpret_cast<Object**>(addr);
         return IsValidSlot(heap, chunk, slot) ? KEEP_SLOT : REMOVE_SLOT;
       });
-    }
-  }
-  for (MemoryChunk* chunk : *heap->code_space()) {
-    TypedSlotSet* slots = GetTypedSlotSet(chunk);
-    if (slots != nullptr) {
-      slots->Iterate(
-          [heap, chunk](SlotType type, Address host_addr, Address addr) {
-            if (Marking::IsBlack(Marking::MarkBitFrom(host_addr))) {
-              return KEEP_SLOT;
-            } else {
-              return REMOVE_SLOT;
-            }
-          });
     }
   }
 }