rm internal API

Author: stephen-derosa

include/livekit/subscription_thread_dispatcher.h

@@ -236,11 +236,11 @@ class LIVEKIT_API SubscriptionThreadDispatcher {
 
   /// @brief Number of active audio/video reader threads. Intended for tests.
   /// @return Count of currently active audio and video reader slots.
-  LIVEKIT_INTERNAL_API std::size_t activeReaderCount() const;
+  std::size_t activeReaderCount() const;
 
   /// @brief Number of active data track reader threads. Intended for tests.
   /// @return Count of currently active data reader slots.
-  LIVEKIT_INTERNAL_API std::size_t activeDataReaderCount() const;
+  std::size_t activeDataReaderCount() const;
 
 private:
   friend class SubscriptionThreadDispatcherTest;