Remove unused trigonometric code.

src/x64/codegen-x64.cc

Index: src/x64/codegen-x64.cc
diff --git a/src/x64/codegen-x64.cc b/src/x64/codegen-x64.cc
index afe0e3b7f529f61b2c6a7be184e4cc1226d119cc..96d930e3329d1abbcf45890105ebac4c74887c45 100644
--- a/src/x64/codegen-x64.cc
+++ b/src/x64/codegen-x64.cc
@@ -64,9 +64,6 @@ UnaryMathFunction CreateTranscendentalFunction(TranscendentalCache::Type type) {
   if (buffer == NULL) {
     // Fallback to library function if function cannot be created.
     switch (type) {
-      case TranscendentalCache::SIN: return &sin;
-      case TranscendentalCache::COS: return &cos;
-      case TranscendentalCache::TAN: return &tan;
       case TranscendentalCache::LOG: return &log;
       default: UNIMPLEMENTED();
     }