Revert "Core/Misc: Replace time(NULL) with GameTime::GetGameTime()"

This reverts commit 5fe3a1f7f9.

src/server/game/Server/WorldSocket.cpp

@@ -20,7 +20,6 @@
 #include "BattlenetAccountMgr.h"
 #include "BigNumber.h"
 #include "DatabaseEnv.h"
-#include "GameTime.h"
 #include "IPLocation.h"
 #include "Opcodes.h"
 #include "PacketLog.h"
@@ -644,7 +643,7 @@ void WorldSocket::HandleAuthSessionCallback(std::shared_ptr<AuthSession> authSes
     //! Negative mutetime indicates amount of seconds to be muted effective on next login - which is now.
     if (mutetime < 0)
     {
-        mutetime = GameTime::GetGameTime() + llabs(mutetime);
+        mutetime = time(nullptr) + llabs(mutetime);
 
         stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_MUTE_TIME_LOGIN);
         stmt->setInt64(0, mutetime);