Utility: removed semaphore.

src/Utility/Utility.h

@@ -24,9 +24,7 @@
 #ifndef UTILITY_H
 #define UTILITY_H
 
-#include <condition_variable>
 #include <memory>
-#include <mutex>
 #include <string>
 
 #include "IHttpServer.h"
@@ -65,28 +63,6 @@ IHttpServer::IResponse::Pointer response_from_string(
 
 }  // namespace util
 
-class Semaphore {
- public:
-  Semaphore() : count_() {}
-
-  void notify() {
-    std::unique_lock<std::mutex> lock(mutex_);
-    count_++;
-    condition_.notify_one();
-  }
-
-  void wait() {
-    std::unique_lock<std::mutex> lock(mutex_);
-    while (count_ == 0) condition_.wait(lock);
-    count_--;
-  }
-
- private:
-  std::mutex mutex_;
-  std::condition_variable condition_;
-  uint32_t count_;
-};
-
 }  // namespace cloudstorage
 
 #endif  // UTILITY_H