Remove some leftovers of full-codegen's generators implementation.

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 395 matching lines @@
     DEBUG_BREAK_SLOT_AT_RETURN,
     DEBUG_BREAK_SLOT_AT_CALL,
     DEBUG_BREAK_SLOT_AT_TAIL_CALL,
 
     EXTERNAL_REFERENCE,  // The address of an external C++ function.
     INTERNAL_REFERENCE,  // An address inside the same function.
 
     // Encoded internal reference, used only on MIPS, MIPS64 and PPC.
     INTERNAL_REFERENCE_ENCODED,
 
-    // Continuation points for a generator yield.
-    GENERATOR_CONTINUATION,
-
     // Marks constant and veneer pools. Only used on ARM and ARM64.
     // They use a custom noncompact encoding.
     CONST_POOL,
     VENEER_POOL,
 
     DEOPT_SCRIPT_OFFSET,
     DEOPT_INLINING_ID,  // Deoptimization source position.
     DEOPT_REASON,       // Deoptimization reason index.
     DEOPT_ID,           // Deoptimization inlining id.
 
@@ skipping 88 matching lines @@
   }
   static inline bool IsDebuggerStatement(Mode mode) {
     return mode == DEBUGGER_STATEMENT;
   }
   static inline bool IsNone(Mode mode) {
     return mode == NONE32 || mode == NONE64;
   }
   static inline bool IsCodeAgeSequence(Mode mode) {
     return mode == CODE_AGE_SEQUENCE;
   }
-  static inline bool IsGeneratorContinuation(Mode mode) {
-    return mode == GENERATOR_CONTINUATION;
-  }
   static inline bool IsWasmMemoryReference(Mode mode) {
     return mode == WASM_MEMORY_REFERENCE;
   }
   static inline bool IsWasmMemorySizeReference(Mode mode) {
     return mode == WASM_MEMORY_SIZE_REFERENCE;
   }
   static inline bool IsWasmGlobalReference(Mode mode) {
     return mode == WASM_GLOBAL_REFERENCE;
   }
   static inline int ModeMask(Mode mode) { return 1 << mode; }
@@ skipping 742 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_