Revert a change to LinuxEthernetTap threading to eliminate out of order packet issues on some systems.

osdep/LinuxEthernetTap.hpp

@@ -26,7 +26,6 @@
 #include <mutex>
 #include "../node/MulticastGroup.hpp"
 #include "EthernetTap.hpp"
-#include "BlockingQueue.hpp"
 
 namespace ZeroTier {
 
@@ -71,12 +70,7 @@ private:
 	int _shutdownSignalPipe[2];
 	std::atomic_bool _enabled;
 	std::atomic_bool _run;
-	std::thread _tapReaderThread[2];
-	std::thread _tapProcessorThread;
-	std::mutex _buffers_l;
-	std::mutex _thread_init_l;
-	std::vector<void *> _buffers;
-	BlockingQueue< std::pair<void *,int> > _tapq;
+	std::thread _tapReaderThread;
 };
 
 } // namespace ZeroTier