Remove more dead code after Object.observe removal

src/runtime/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/base/platform/time.h"
 #include "src/objects.h"
@@ skipping 363 matching lines @@
   F(IsSmi, 1, 1)                       \
   F(GetRootNaN, 0, 1)                  \
   F(GetHoleNaNUpper, 0, 1)             \
   F(GetHoleNaNLower, 0, 1)
 
 #define FOR_EACH_INTRINSIC_OBJECT(F)                 \
   F(GetPrototype, 1, 1)                              \
   F(ObjectHasOwnProperty, 2, 1)                      \
   F(InternalSetPrototype, 2, 1)                      \
   F(SetPrototype, 2, 1)                              \
-  F(GetOwnProperty_Legacy, 2, 1)                     \
   F(OptimizeObjectForAddingMultipleProperties, 2, 1) \
   F(GetProperty, 2, 1)                               \
   F(KeyedGetProperty, 2, 1)                          \
   F(LoadGlobalViaContext, 1, 1)                      \
   F(StoreGlobalViaContext_Sloppy, 2, 1)              \
   F(StoreGlobalViaContext_Strict, 2, 1)              \
   F(AddNamedProperty, 4, 1)                          \
   F(SetProperty, 4, 1)                               \
   F(AddElement, 3, 1)                                \
   F(AppendElement, 2, 1)                             \
   F(DeleteProperty_Sloppy, 2, 1)                     \
   F(DeleteProperty_Strict, 2, 1)                     \
   F(HasProperty, 2, 1)                               \
   F(PropertyIsEnumerable, 2, 1)                      \
   F(GetOwnPropertyKeys, 2, 1)                        \
   F(GetInterceptorInfo, 1, 1)                        \
   F(ToFastProperties, 1, 1)                          \
   F(AllocateHeapNumber, 0, 1)                        \
   F(NewObject, 2, 1)                                 \
   F(FinalizeInstanceSize, 1, 1)                      \
-  F(GlobalProxy, 1, 1)                               \
-  F(LookupAccessor, 3, 1)                            \
   F(LoadMutableDouble, 2, 1)                         \
   F(TryMigrateInstance, 1, 1)                        \
   F(IsJSGlobalProxy, 1, 1)                           \
   F(DefineAccessorPropertyUnchecked, 5, 1)           \
   F(DefineDataPropertyInLiteral, 5, 1)               \
   F(GetDataProperty, 2, 1)                           \
   F(HasFastPackedElements, 1, 1)                     \
   F(ValueOf, 1, 1)                                   \
   F(IsJSReceiver, 1, 1)                              \
   F(ClassOf, 1, 1)                                   \
@@ skipping 745 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_