Revert of [turbofan] Discard the shared code entry in the optimized code map.

src/crankshaft/hydrogen-instructions.h

Index: src/crankshaft/hydrogen-instructions.h
diff --git a/src/crankshaft/hydrogen-instructions.h b/src/crankshaft/hydrogen-instructions.h
index 6d1c47bcb86649080229d2a85e6a744ec1a70094..7bbdfefd7e62c0f84fc6c097b9b2911e7e5eb877 100644
--- a/src/crankshaft/hydrogen-instructions.h
+++ b/src/crankshaft/hydrogen-instructions.h
@@ -5363,6 +5363,11 @@
                          SharedFunctionInfo::kOptimizedCodeMapOffset);
   }
 
+  static HObjectAccess ForOptimizedCodeMapSharedCode() {
+    return HObjectAccess(kInobject, FixedArray::OffsetOfElementAt(
+                                        SharedFunctionInfo::kSharedCodeIndex));
+  }
+
   static HObjectAccess ForFunctionContextPointer() {
     return HObjectAccess(kInobject, JSFunction::kContextOffset);
   }