Remove unused 'receiver' field from generators

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 206 matching lines @@
   F(SetCode, 2, 1)                         \
   F(SetNativeFlag, 1, 1)                   \
   F(IsConstructor, 1, 1)                   \
   F(SetForceInlineFlag, 1, 1)              \
   F(Call, -1 /* >= 2 */, 1)                \
   F(ConvertReceiver, 1, 1)                 \
   F(IsFunction, 1, 1)                      \
   F(FunctionToString, 1, 1)
 
 #define FOR_EACH_INTRINSIC_GENERATOR(F) \
-  F(CreateJSGeneratorObject, 2, 1)      \
+  F(CreateJSGeneratorObject, 1, 1)      \
   F(SuspendJSGeneratorObject, 1, 1)     \
   F(GeneratorClose, 1, 1)               \
   F(GeneratorGetFunction, 1, 1)         \
-  F(GeneratorGetReceiver, 1, 1)         \
   F(GeneratorGetInput, 1, 1)            \
   F(GeneratorSetContext, 1, 1)          \
   F(GeneratorGetContinuation, 1, 1)     \
   F(GeneratorSetContinuation, 2, 1)     \
   F(GeneratorGetSourcePosition, 1, 1)   \
   F(GeneratorGetResumeMode, 1, 1)       \
   F(GeneratorLoadRegister, 2, 1)        \
   F(GeneratorStoreRegister, 3, 1)
 
 #ifdef V8_I18N_SUPPORT
@@ skipping 923 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_