diff --git a/src/host/rcp_host.hpp b/src/host/rcp_host.hpp
index 0ab9ef2fae0..27784351396 100644
--- a/src/host/rcp_host.hpp
+++ b/src/host/rcp_host.hpp
@@ -245,19 +245,6 @@ class RcpHost : public MainloopProcessor, public ThreadHost, public OtNetworkPro
     }
     void HandleStateChanged(otChangedFlags aFlags);
 
-    static void HandleBackboneRouterDomainPrefixEvent(void                             *aContext,
-                                                      otBackboneRouterDomainPrefixEvent aEvent,
-                                                      const otIp6Prefix                *aDomainPrefix);
-    void        HandleBackboneRouterDomainPrefixEvent(otBackboneRouterDomainPrefixEvent aEvent,
-                                                      const otIp6Prefix                *aDomainPrefix);
-
-#if OTBR_ENABLE_DUA_ROUTING
-    static void HandleBackboneRouterNdProxyEvent(void                        *aContext,
-                                                 otBackboneRouterNdProxyEvent aEvent,
-                                                 const otIp6Address          *aAddress);
-    void        HandleBackboneRouterNdProxyEvent(otBackboneRouterNdProxyEvent aEvent, const otIp6Address *aAddress);
-#endif
-
     using DetachGracefullyCallback = std::function<void()>;
     void        ThreadDetachGracefully(const DetachGracefullyCallback &aCallback);
     static void ThreadDetachGracefullyCallback(void *aContext);