Reland "[turbofan] Discard the shared code entry in the optimized code map."

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 8956c9a20912b62c9aa728dbed1c60fbee3fe4f0..babe107f2fe37f84facbfdacfd38d5d0f3d7c22f 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -63,7 +63,6 @@ using v8::MemoryPressureLevel;
   V(FixedArray, empty_type_feedback_vector, EmptyTypeFeedbackVector)           \
   V(FixedArray, empty_fixed_array, EmptyFixedArray)                            \
   V(ScopeInfo, empty_scope_info, EmptyScopeInfo)                               \
-  V(FixedArray, cleared_optimized_code_map, ClearedOptimizedCodeMap)           \
   V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray)             \
   /* Entries beyond the first 32                                            */ \
   /* The roots above this line should be boring from a GC point of view.    */ \