A64: Remove two TODOs that will not be done.

src/a64/assembler-a64.cc

 // Copyright 2013 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
@@ skipping 2336 matching lines @@
            (pc_limit < (first_const_pool_use_ + kMaxDistToPool)));
     no_const_pool_before_ = pc_limit;
   }
 
   if (next_buffer_check_ < no_const_pool_before_) {
     next_buffer_check_ = no_const_pool_before_;
   }
 }
 
 
-// TODO(all): We are never trying to emit constant pools after unconditional
-// branches, because we only call it from Assembler::Emit() (or manually).
-// We should try to enable that.
 void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
   // Some short sequence of instruction mustn't be broken up by constant pool
   // emission, such sequences are protected by calls to BlockConstPoolFor and
   // BlockConstPoolScope.
   if (is_const_pool_blocked()) {
     // Something is wrong if emission is forced and blocked at the same time.
     ASSERT(!force_emit);
     return;
   }
 
@@ skipping 119 matching lines @@
   // code.
 #ifdef ENABLE_DEBUGGER_SUPPORT
   RecordRelocInfo(RelocInfo::CONST_POOL, static_cast<intptr_t>(size));
 #endif
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64