[arm] Drop SMMLS support.

src/arm/disasm-arm.cc

 // Copyright 2011 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.
 
 // A Disassembler object is used to disassemble a block of code instruction by
 // instruction. The default implementation of the NameConverter object can be
 // overriden to modify register names or to do symbol lookup on addresses.
 //
 // The example below will disassemble a block of code and print it to stdout.
 //
@@ skipping 1079 matching lines @@
                 UNREACHABLE();
               }
               break;
           }
         }
       }
       break;
     }
     case db_x: {
       if (instr->Bits(22, 20) == 0x5) {
-        if (instr->Bits(7, 4) == 0xd) {
-          // SMMLS (in V8 notation matching ARM ISA format)
-          Format(instr, "smmls'cond 'rn, 'rm, 'rs, 'rd");
-          break;
-        }
         if (instr->Bits(7, 4) == 0x1) {
           if (instr->Bits(15, 12) == 0xF) {
             Format(instr, "smmul'cond 'rn, 'rm, 'rs");
           } else {
             // SMMLA (in V8 notation matching ARM ISA format)
             Format(instr, "smmla'cond 'rn, 'rm, 'rs, 'rd");
           }
           break;
         }
       }
@@ skipping 682 matching lines @@
     v8::internal::PrintF(
         f, "%p    %08x      %s\n",
         prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_ARM