[inspector] Drop V8_VERSION checks.

src/inspector/V8StackTraceImpl.cpp

Index: src/inspector/V8StackTraceImpl.cpp
diff --git a/src/inspector/V8StackTraceImpl.cpp b/src/inspector/V8StackTraceImpl.cpp
index d552f256530c0b8e20ef16351565f80a370d5936..25a0e7caf7892fd68b21cc0a37fa66cd5eee186f 100644
--- a/src/inspector/V8StackTraceImpl.cpp
+++ b/src/inspector/V8StackTraceImpl.cpp
@@ -158,9 +158,7 @@ std::unique_ptr<V8StackTraceImpl> V8StackTraceImpl::capture(
   v8::HandleScope handleScope(isolate);
   v8::Local<v8::StackTrace> stackTrace;
   if (isolate->InContext()) {
-#if V8_MAJOR_VERSION >= 5
     isolate->GetCpuProfiler()->CollectSample();
-#endif
     stackTrace = v8::StackTrace::CurrentStackTrace(isolate, maxStackSize,
                                                    stackTraceOptions);
   }