[10612] Revert "[10611] Made some values const"

Reason: It makes no sense to make a local variable const.

This reverts commit 49e3184d69056738701bc15d9b7f982bf11d7bbc.

src/game/WorldSession.cpp

@@ -158,7 +158,7 @@ void WorldSession::LogUnprocessedTail(WorldPacket *packet)
 }
 
 /// Update the WorldSession (triggered by World update)
-bool WorldSession::Update(const uint32 /*diff*/)
+bool WorldSession::Update(uint32 /*diff*/)
 {
     ///- Retrieve packets from the receive queue and call the appropriate handlers
     /// not proccess packets if socket already closed