Revert "Send SIGPROF signals on the profiler event processor thread"

src/platform-macos.cc

Index: src/platform-macos.cc
diff --git a/src/platform-macos.cc b/src/platform-macos.cc
index 79139811c2d703dd63c1c83603baea674a2d6f57..fde5217a78ddd7fac4ff8a52937b423fca8a8c98 100644
--- a/src/platform-macos.cc
+++ b/src/platform-macos.cc
@@ -922,21 +922,4 @@ void Sampler::Stop() {
 }
 
 
-bool Sampler::CanSampleOnProfilerEventsProcessorThread() {
-  return false;
-}
-
-
-void Sampler::DoSample() {
-}
-
-
-void Sampler::StartProfiling() {
-}
-
-
-void Sampler::StopProfiling() {
-}
-
-
 } }  // namespace v8::internal