Remove unused trigonometric code.

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index cfafc0645a099d26fe7d117f35254ec93ded51db..4bac4b1a4c5d8c314322b2432ad28abc544faa02 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -131,7 +131,6 @@ class LCodeGen;
   V(LoadNamedGeneric)                           \
   V(MapEnumLength)                              \
   V(MathAbs)                                    \
-  V(MathCos)                                    \
   V(MathExp)                                    \
   V(MathFloor)                                  \
   V(MathFloorOfDiv)                             \
@@ -139,9 +138,7 @@ class LCodeGen;
   V(MathMinMax)                                 \
   V(MathPowHalf)                                \
   V(MathRound)                                  \
-  V(MathSin)                                    \
   V(MathSqrt)                                   \
-  V(MathTan)                                    \
   V(ModI)                                       \
   V(MulI)                                       \
   V(MultiplyAddD)                               \
@@ -816,42 +813,6 @@ class LMathLog V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LMathSin V8_FINAL : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathSin(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathSin, "math-sin")
-};
-
-
-class LMathCos V8_FINAL : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathCos(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathCos, "math-cos")
-};
-
-
-class LMathTan V8_FINAL : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathTan(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathTan, "math-tan")
-};
-
-
 class LMathExp V8_FINAL : public LTemplateInstruction<1, 1, 3> {
  public:
   LMathExp(LOperand* value,
@@ -2778,9 +2739,6 @@ class LChunkBuilder V8_FINAL BASE_EMBEDDED {
   LInstruction* DoMathRound(HUnaryMathOperation* instr);
   LInstruction* DoMathAbs(HUnaryMathOperation* instr);
   LInstruction* DoMathLog(HUnaryMathOperation* instr);
-  LInstruction* DoMathSin(HUnaryMathOperation* instr);
-  LInstruction* DoMathCos(HUnaryMathOperation* instr);
-  LInstruction* DoMathTan(HUnaryMathOperation* instr);
   LInstruction* DoMathExp(HUnaryMathOperation* instr);
   LInstruction* DoMathSqrt(HUnaryMathOperation* instr);
   LInstruction* DoMathPowHalf(HUnaryMathOperation* instr);