refactor(Core/Misc): Use steady_timer instead of deadline_timer (#20940)

src/common/Asio/DeadlineTimer.h

@@ -1,34 +0,0 @@
-/*
- * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Affero General Public License as published by the
- * Free Software Foundation; either version 3 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef DeadlineTimer_h__
-#define DeadlineTimer_h__
-
-#include <boost/asio/deadline_timer.hpp>
-
-#define DeadlineTimerBase boost::asio::basic_deadline_timer<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime>, boost::asio::io_context::executor_type>
-
-namespace Acore::Asio
-{
-    class DeadlineTimer : public DeadlineTimerBase
-    {
-    public:
-        using DeadlineTimerBase::basic_deadline_timer;
-    };
-}
-
-#endif // DeadlineTimer_h__

src/common/Asio/IoContext.h

@@ -19,7 +19,6 @@
 #define IoContext_h__
 
 #include <boost/version.hpp>
-
 #include <boost/asio/io_context.hpp>
 #include <boost/asio/post.hpp>
 #define IoContextBaseNamespace boost::asio
@@ -52,9 +51,9 @@ namespace Acore::Asio
     }
 
     template<typename T>
-    inline decltype(auto) get_io_context(T&& ioObject)
+    inline boost::asio::io_context& get_io_context(T&& ioObject)
     {
-        return ioObject.get_executor().context();
+        return static_cast<boost::asio::io_context&>(ioObject.get_executor().context());
     }
 }