src: remove unimplemented method in class StreamPipe

PR-URL: #26202
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: gengjiawen

src/stream_pipe.h

@@ -27,7 +27,6 @@ class StreamPipe : public AsyncWrap {
   inline StreamBase* sink();
 
   inline void ShutdownWritable();
-  inline void FlushToWritable();
 
   bool is_reading_ = false;
   bool is_writing_ = false;