Remove Nz::String and Nz::StringStream

include/Nazara/Core/ByteArray.hpp

@@ -8,7 +8,8 @@
 #define NAZARA_BYTEARRAY_HPP
 
 #include <Nazara/Prerequisites.hpp>
-#include <Nazara/Core/String.hpp>
+#include <Nazara/Core/AbstractHash.hpp>
+#include <string>
 #include <vector>
 
 namespace Nz
@@ -88,8 +89,8 @@ namespace Nz
 			inline void ShrinkToFit();
 			inline void Swap(ByteArray& other);
 
-			String ToHex() const;
-			inline String ToString() const;
+			std::string ToHex() const;
+			inline std::string ToString() const;
 
 			// STL interface
 			inline iterator begin() noexcept;