refactor: forward declaration of class not needed

include/dpp/event.h

@@ -25,11 +25,7 @@
 #include <dpp/json_fwd.h>
 
 #define event_decl(x,wstype) /** @brief Internal event handler for wstype websocket events. Called for each websocket message of this type. @internal */ \
-	class x : public event { public: virtual void handle(dpp::discord_client* client, nlohmann::json &j, const std::string &raw); };
-
-namespace dpp {
-	class discord_client;
-};
+	class x : public event { public: virtual void handle(class dpp::discord_client* client, nlohmann::json &j, const std::string &raw); };
 
 /**
  * @brief The events namespace holds the internal event handlers for each websocket event.