replaced the lockfree queue with bounded, locked queue

include/spdlog/sinks/test_sink.h

@@ -1,39 +0,0 @@
-//
-// Copyright(c) 2015 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#pragma once
-
-#include "../details/null_mutex.h"
-#include "base_sink.h"
-
-#include <mutex>
-
-namespace spdlog {
-namespace sinks {
-
-template<class Mutex>
-class test_sink : public base_sink<Mutex>
-{
-public:
-    size_t msg_counter()
-    {
-        return msg_counter_;
-    }
-
-protected:
-    void _sink_it(const details::log_msg &) override
-    {
-        msg_counter_++;
-    }
-
-    void _flush() override {}
-    size_t msg_counter_{0};
-};
-
-using test_sink_mt = test_sink<std::mutex>;
-using test_sink_st = test_sink<details::null_mutex>;
-
-} // namespace sinks
-} // namespace spdlog