[heap] Remove max executable size configuration.

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 51 matching lines @@
 enum class CodeObjectRequired { kNo, kYes };
 
 
 class AssemblerBase: public Malloced {
  public:
   struct IsolateData {
     explicit IsolateData(Isolate* isolate);
     IsolateData(const IsolateData&) = default;
 
     bool serializer_enabled_;
-#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X64
     size_t max_old_generation_size_;
-#endif
 #if V8_TARGET_ARCH_X64
     Address code_range_start_;
 #endif
   };
 
   AssemblerBase(IsolateData isolate_data, void* buffer, int buffer_size);
   virtual ~AssemblerBase();
 
   IsolateData isolate_data() const { return isolate_data_; }
 
@@ skipping 1171 matching lines @@
     std::vector<ConstantPoolEntry> shared_entries;
   };
 
   Label emitted_label_;  // Records pc_offset of emitted pool
   PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES];
 };
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_ASSEMBLER_H_