Delete superfluous methods

rosbag2_storage/include/rosbag2_storage/storage_factory.hpp

@@ -55,16 +55,6 @@ class ROSBAG2_STORAGE_PUBLIC StorageFactory
   std::unique_ptr<StorageFactoryImpl> impl_;
 };
 
-template<>
-ROSBAG2_STORAGE_PUBLIC
-std::shared_ptr<storage_interfaces::ReadOnlyInterface> StorageFactory::open(
-  const std::string & uri, const std::string & storage_id);
-
-template<>
-ROSBAG2_STORAGE_PUBLIC
-std::shared_ptr<storage_interfaces::ReadWriteInterface> StorageFactory::open(
-  const std::string & uri, const std::string & storage_id);
-
 }  // namespace rosbag2_storage
 
 #ifdef _WIN32