Remove unused trigonometric code.

src/mips/codegen-mips.cc

Index: src/mips/codegen-mips.cc
diff --git a/src/mips/codegen-mips.cc b/src/mips/codegen-mips.cc
index 3a87c5af88658b9c848e8c56aeafe7e46a87c76f..229cc0b7e0c5c6f67657f8f28b70cb931940bb22 100644
--- a/src/mips/codegen-mips.cc
+++ b/src/mips/codegen-mips.cc
@@ -39,9 +39,6 @@ namespace internal {
 
 UnaryMathFunction CreateTranscendentalFunction(TranscendentalCache::Type type) {
   switch (type) {
-    case TranscendentalCache::SIN: return &sin;
-    case TranscendentalCache::COS: return &cos;
-    case TranscendentalCache::TAN: return &tan;
     case TranscendentalCache::LOG: return &log;
     default: UNIMPLEMENTED();
   }