Remove unused trigonometric code.

src/mips/code-stubs-mips.cc

 // Copyright 2012 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
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1449 matching lines @@
   __ push(ra);
   __ PrepareCallCFunction(2, scratch);
   if (IsMipsSoftFloatABI) {
     __ Move(a0, a1, f4);
   } else {
     __ mov_d(f12, f4);
   }
   AllowExternalCallThatCantCauseGC scope(masm);
   Isolate* isolate = masm->isolate();
   switch (type_) {
-    case TranscendentalCache::SIN:
-      __ CallCFunction(
-          ExternalReference::math_sin_double_function(isolate),
-          0, 1);
-      break;
-    case TranscendentalCache::COS:
-      __ CallCFunction(
-          ExternalReference::math_cos_double_function(isolate),
-          0, 1);
-      break;
-    case TranscendentalCache::TAN:
-      __ CallCFunction(ExternalReference::math_tan_double_function(isolate),
-          0, 1);
-      break;
     case TranscendentalCache::LOG:
       __ CallCFunction(
           ExternalReference::math_log_double_function(isolate),
           0, 1);
       break;
     default:
       UNIMPLEMENTED();
       break;
   }
   __ pop(ra);
 }
 
 
 Runtime::FunctionId TranscendentalCacheStub::RuntimeFunction() {
   switch (type_) {
     // Add more cases when necessary.
-    case TranscendentalCache::SIN: return Runtime::kMath_sin;
-    case TranscendentalCache::COS: return Runtime::kMath_cos;
-    case TranscendentalCache::TAN: return Runtime::kMath_tan;
     case TranscendentalCache::LOG: return Runtime::kMath_log;
     default:
       UNIMPLEMENTED();
       return Runtime::kAbort;
   }
 }
 
 
 void MathPowStub::Generate(MacroAssembler* masm) {
   const Register base = a1;
@@ skipping 4665 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS