Remove unused trigonometric code.

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 879dcc81484196905fa82a9860e9e4c03b264bc2..40d37c8a535a9a0ccda6006c7b08e759646a3095 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -302,9 +302,6 @@ double fast_##name(double x) {                           \
   return (*fast_##name##_function)(x);                   \
 }
 
-UNARY_MATH_FUNCTION(sin, CreateTranscendentalFunction(TranscendentalCache::SIN))
-UNARY_MATH_FUNCTION(cos, CreateTranscendentalFunction(TranscendentalCache::COS))
-UNARY_MATH_FUNCTION(tan, CreateTranscendentalFunction(TranscendentalCache::TAN))
 UNARY_MATH_FUNCTION(log, CreateTranscendentalFunction(TranscendentalCache::LOG))
 UNARY_MATH_FUNCTION(exp, CreateExpFunction())
 UNARY_MATH_FUNCTION(sqrt, CreateSqrtFunction())
@@ -521,9 +518,6 @@ void OS::PostSetUp() {
   OS::memcopy_uint16_uint8_function =
       CreateMemCopyUint16Uint8Function(&OS::MemCopyUint16Uint8Wrapper);
 #endif
-  init_fast_sin_function();
-  init_fast_cos_function();
-  init_fast_tan_function();
   init_fast_log_function();
   // fast_exp is initialized lazily.
   init_fast_sqrt_function();