Remove unused trigonometric code.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index a441ba515a99ab2cd7858d55b8c73ee05868e1af..344879291c88bb644e4275edec67fc45d852a3d1 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1190,9 +1190,6 @@ LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) {
     case kMathRound: return DoMathRound(instr);
     case kMathAbs: return DoMathAbs(instr);
     case kMathLog: return DoMathLog(instr);
-    case kMathSin: return DoMathSin(instr);
-    case kMathCos: return DoMathCos(instr);
-    case kMathTan: return DoMathTan(instr);
     case kMathExp: return DoMathExp(instr);
     case kMathSqrt: return DoMathSqrt(instr);
     case kMathPowHalf: return DoMathPowHalf(instr);
@@ -1210,27 +1207,6 @@ LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoMathSin(HUnaryMathOperation* instr) {
-  LOperand* input = UseFixedDouble(instr->value(), f4);
-  LMathSin* result = new(zone()) LMathSin(input);
-  return MarkAsCall(DefineFixedDouble(result, f4), instr);
-}
-
-
-LInstruction* LChunkBuilder::DoMathCos(HUnaryMathOperation* instr) {
-  LOperand* input = UseFixedDouble(instr->value(), f4);
-  LMathCos* result = new(zone()) LMathCos(input);
-  return MarkAsCall(DefineFixedDouble(result, f4), instr);
-}
-
-
-LInstruction* LChunkBuilder::DoMathTan(HUnaryMathOperation* instr) {
-  LOperand* input = UseFixedDouble(instr->value(), f4);
-  LMathTan* result = new(zone()) LMathTan(input);
-  return MarkAsCall(DefineFixedDouble(result, f4), instr);
-}
-
-
 LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) {
   ASSERT(instr->representation().IsDouble());
   ASSERT(instr->value()->representation().IsDouble());