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

src/platform-freebsd.cc

Index: src/platform-freebsd.cc
diff --git a/src/platform-freebsd.cc b/src/platform-freebsd.cc
index 1af928e169da3af5cf0a9036eabc376423714540..986c5af4dc77a3d5812e1c8a6bccabff24b13708 100644
--- a/src/platform-freebsd.cc
+++ b/src/platform-freebsd.cc
@@ -898,21 +898,4 @@ void Sampler::Stop() {
 }
 
 
-bool Sampler::CanSampleOnProfilerEventsProcessorThread() {
-  return false;
-}
-
-
-void Sampler::DoSample() {
-}
-
-
-void Sampler::StartProfiling() {
-}
-
-
-void Sampler::StopProfiling() {
-}
-
-
 } }  // namespace v8::internal