Remove unused trigonometric code.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 26f446cb75a0d7bc32625a4e6a6bba399283bcc0..b4d9441b58d4b205f983e1d3f032d589a1e51f84 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3874,39 +3874,6 @@ void LCodeGen::DoMathLog(LMathLog* instr) {
 }
 
 
-void LCodeGen::DoMathTan(LMathTan* instr) {
-  ASSERT(ToDoubleRegister(instr->result()).is(f4));
-  // Set the context register to a GC-safe fake value. Clobbering it is
-  // OK because this instruction is marked as a call.
-  __ mov(cp, zero_reg);
-  TranscendentalCacheStub stub(TranscendentalCache::TAN,
-                               TranscendentalCacheStub::UNTAGGED);
-  CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
-}
-
-
-void LCodeGen::DoMathCos(LMathCos* instr) {
-  ASSERT(ToDoubleRegister(instr->result()).is(f4));
-  // Set the context register to a GC-safe fake value. Clobbering it is
-  // OK because this instruction is marked as a call.
-  __ mov(cp, zero_reg);
-  TranscendentalCacheStub stub(TranscendentalCache::COS,
-                               TranscendentalCacheStub::UNTAGGED);
-  CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
-}
-
-
-void LCodeGen::DoMathSin(LMathSin* instr) {
-  ASSERT(ToDoubleRegister(instr->result()).is(f4));
-  // Set the context register to a GC-safe fake value. Clobbering it is
-  // OK because this instruction is marked as a call.
-  __ mov(cp, zero_reg);
-  TranscendentalCacheStub stub(TranscendentalCache::SIN,
-                               TranscendentalCacheStub::UNTAGGED);
-  CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
-}
-
-
 void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) {
   ASSERT(ToRegister(instr->context()).is(cp));
   ASSERT(ToRegister(instr->function()).is(a1));