Fix build

AI/VCAI/AIUtility.h

@@ -17,7 +17,6 @@
 #include "../../lib/callback/CCallback.h"
 
 class VCAI;
-class CCallback;
 struct creInfo;
 
 using crint3 = const int3 &;

AI/VCAI/Goals/AbstractGoal.h

@@ -16,7 +16,6 @@
 struct HeroPtr;
 class VCAI;
 class FuzzyHelper;
-class CCallback;
 
 namespace Goals
 {

AI/VCAI/Pathfinding/AINodeStorage.h

@@ -18,8 +18,6 @@
 #include "../Goals/AbstractGoal.h"
 #include "Actions/ISpecialAction.h"
 
-class CCallback;
-
 struct AIPathNode : public CGPathNode
 {
 	uint32_t chainMask;

client/Client.h

@@ -27,6 +27,8 @@ class CGameInterface;
 class BattleAction;
 class BattleInfo;
 struct BankConfig;
+class CCallback;
+class CBattleCallback;
 
 #if SCRIPTING_ENABLED
 namespace scripting
@@ -42,8 +44,6 @@ namespace events
 
 VCMI_LIB_NAMESPACE_END
 
-class CBattleCallback;
-class CCallback;
 class CClient;
 class CBaseForCLApply;
 

client/widgets/CExchangeController.h

@@ -11,8 +11,6 @@
  
 #include "../lib/mapObjects/CGHeroInstance.h"
  
-class CCallback;
-
 class CExchangeController
 {
 public:

test/mock/mock_CPSICallback.h

@@ -14,8 +14,6 @@
 #include "../lib/callback/CPlayerSpecificInfoCallback.h"
 #include "../lib/ResourceSet.h"
 
-class CCallback;
-
 class CPSICallbackMock : public CPlayerSpecificInfoCallback
 {
 public: