Revert "Fix non-PCH build." and fix it the proper way

This reverts commit 438d090c8d.

src/server/game/AI/ScriptedAI/ScriptedGossip.cpp

@@ -16,8 +16,9 @@
 */
 
 #include "ScriptedGossip.h"
-#include "Player.h"
 #include "Creature.h"
+#include "GossipDef.h"
+#include "Player.h"
 
 void ClearGossipMenuFor(Player* player) { player->PlayerTalkClass->ClearMenus(); }
 // Using provided text, not from DB

src/server/game/AI/ScriptedAI/ScriptedGossip.h

@@ -19,9 +19,12 @@
 #ifndef SC_GOSSIP_H
 #define SC_GOSSIP_H
 
-#include "GossipDef.h"
-#include "QuestDef.h"
-#include "Creature.h"
+#include "Define.h"
+#include <string>
+
+class Creature;
+class ObjectGuid;
+class Player;
 
 // Gossip Item Text
 #define GOSSIP_TEXT_BROWSE_GOODS        "I'd like to browse your goods."