Remove unused function declaration in logicalproto.h.

In the passing, fix a typo in pgoutput.c.

Reported-by: Tomas Vondra
Author: Tomas Vondra
Reviewed-by: Dilip Kumar
Discussion: https://postgr.es/m/20200909084353.pncuclpbwlr7vylh@development

src/backend/replication/pgoutput/pgoutput.c

@@ -77,7 +77,7 @@ static void send_relation_and_attrs(Relation relation, TransactionId xid,
  * and with streamed transactions the commit order may be different from
  * the order the transactions are sent in. Also, the (sub) transactions
  * might get aborted so we need to send the schema for each (sub) transaction
- * so that we don't loose the schema information on abort. For handling this,
+ * so that we don't lose the schema information on abort. For handling this,
  * we maintain the list of xids (streamed_txns) for those we have already sent
  * the schema.
  *

src/include/replication/logicalproto.h

@@ -133,7 +133,6 @@ extern void logicalrep_write_stream_start(StringInfo out, TransactionId xid,
 extern TransactionId logicalrep_read_stream_start(StringInfo in,
 												  bool *first_segment);
 extern void logicalrep_write_stream_stop(StringInfo out);
-extern TransactionId logicalrep_read_stream_stop(StringInfo in);
 extern void logicalrep_write_stream_commit(StringInfo out, ReorderBufferTXN *txn,
 										   XLogRecPtr commit_lsn);
 extern TransactionId logicalrep_read_stream_commit(StringInfo out,