Remove API_TIMELINE_DURATION from Dart_ReadKernelBinary.

runtime/vm/dart_api_impl.cc

Index: runtime/vm/dart_api_impl.cc
diff --git a/runtime/vm/dart_api_impl.cc b/runtime/vm/dart_api_impl.cc
index cd8c54e63d24162755b57a0c800a6344f0c6a839..21c8a041caf21399955485903cce32851df60b2d 100644
--- a/runtime/vm/dart_api_impl.cc
+++ b/runtime/vm/dart_api_impl.cc
@@ -5395,8 +5395,6 @@ DART_EXPORT Dart_Handle Dart_LoadScriptFromSnapshot(const uint8_t* buffer,
 
 DART_EXPORT void* Dart_ReadKernelBinary(const uint8_t* buffer,
                                         intptr_t buffer_len) {
-  API_TIMELINE_DURATION;
-
 #if defined(DART_PRECOMPILED_RUNTIME)
   UNREACHABLE();
   return NULL;