Remove the last remnants of the TranscendentalCache.

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 0070bdf6a770bb27febdf7808493a6a4339b1182..02a7b769c7e5ef93d85e231db90044f2e65b3a59 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -302,7 +302,6 @@ double fast_##name(double x) {                           \
   return (*fast_##name##_function)(x);                   \
 }
 
-UNARY_MATH_FUNCTION(log, CreateTranscendentalFunction(TranscendentalCache::LOG))
 UNARY_MATH_FUNCTION(exp, CreateExpFunction())
 UNARY_MATH_FUNCTION(sqrt, CreateSqrtFunction())
 
@@ -527,7 +526,6 @@ void OS::PostSetUp() {
   OS::memcopy_uint8_function =
       CreateMemCopyUint8Function(&OS::MemCopyUint8Wrapper);
 #endif
-  init_fast_log_function();
   // fast_exp is initialized lazily.
   init_fast_sqrt_function();
 }