1 files changed, 0 insertions, 13 deletions
diff --git a/ml/ml-private.h b/ml/ml-private.h
index 2bd72ac5a..e479f2351 100644
--- a/ml/ml-private.h
+++ b/ml/ml-private.h
@@ -6,21 +6,8 @@
 #include "KMeans.h"
 #include "ml/ml.h"
 
-#include <chrono>
 #include <map>
 #include <mutex>
 #include <sstream>
 
-namespace ml {
-
-using SteadyClock = std::chrono::steady_clock;
-using TimePoint = std::chrono::time_point<SteadyClock>;
-
-template<typename T>
-using Duration = std::chrono::duration<T>;
-
-using Seconds = std::chrono::seconds;
-
-} // namespace ml
-
 #endif /* ML_PRIVATE_H */