[debug] mark more unused debug API as deprecated.

src/inspector/v8-debugger.cc

Index: src/inspector/v8-debugger.cc
diff --git a/src/inspector/v8-debugger.cc b/src/inspector/v8-debugger.cc
index cbaa53fb4616c9b393d9c26319d9966f5deb78b4..6ebd55798f4bd48bd540b18efe82dac39fad7843 100644
--- a/src/inspector/v8-debugger.cc
+++ b/src/inspector/v8-debugger.cc
@@ -559,7 +559,7 @@ void V8Debugger::handleV8DebugEvent(
   v8::DebugEvent event = eventDetails.GetEvent();
   if (event != v8::AsyncTaskEvent && event != v8::Break &&
       event != v8::Exception && event != v8::AfterCompile &&
-      event != v8::BeforeCompile && event != v8::CompileError)
+      event != v8::CompileError)
     return;
 
   v8::Local<v8::Context> eventContext = eventDetails.GetEventContext();