From MySQL:

Refactored some code to remove ifdef and removed dead code related to
un-useable sync code.

handler/ha_innodb.cc

@@ -1839,110 +1839,6 @@ innobase_commit_complete(
 	return(0);
 }
 
-#ifdef HAVE_REPLICATION
-/*********************************************************************
-In synchronous replication, reports to InnoDB up to which binlog position
-we have sent the binlog to the slave. Note that replication is synchronous
-for one slave only. For other slaves, we do nothing in this function. This
-function is used in a replication master. */
-
-int
-innobase_repl_report_sent_binlog(
-/*=============================*/
-				/* out: 0 */
-	THD*	thd,		/* in: thread doing the binlog communication to
-				the slave */
-	char*	log_file_name,	/* in: binlog file name */
-	my_off_t end_offset)	/* in: the offset in the binlog file up to
-				which we sent the contents to the slave */
-{
-	int	cmp;
-	ibool	can_release_threads	= 0;
-
-	if (!innodb_inited) {
-
-		return 0;
-	}
-
-	/* If synchronous replication is not switched on, or this thd is
-	sending binlog to a slave where we do not need synchronous replication,
-	then return immediately */
-
-	if (thd->server_id != thd->variables.sync_replication_slave_id) {
-
-		/* Do nothing */
-
-		return(0);
-	}
-
-	pthread_mutex_lock(&innobase_repl_cond_mutex);
-
-	if (innobase_repl_state == 0) {
-
-		ut_print_timestamp(stderr);
-		sql_print_warning("Switching MySQL synchronous replication on "
-				  "again at binlog file %s, position %lu",
-				  log_file_name, (ulong) end_offset);
-
-		innobase_repl_state = 1;
-	}
-
-	/* The position should increase monotonically, since just one thread
-	is sending the binlog to the slave for which we want synchronous
-	replication. Let us check this, and print an error to the .err log
-	if that is not the case. */
-
-	if (innobase_repl_file_name_inited) {
-		cmp = strcmp(log_file_name, innobase_repl_file_name);
-
-		if (cmp < 0
-			|| (cmp == 0 && end_offset < innobase_repl_pos)) {
-
-			ut_print_timestamp(stderr);
-			sql_print_error("MySQL synchronous replication has "
-					"sent binlog to the slave up to file "
-					"%s, position %lu, but now MySQL "
-					"reports that it sent the binlog only "
-					"up to file %s, position %lu",
-					innobase_repl_file_name,
-					(ulong) innobase_repl_pos,
-					log_file_name, (ulong) end_offset);
-		}
-	}
-
-	strcpy(innobase_repl_file_name, log_file_name);
-	innobase_repl_pos = end_offset;
-	innobase_repl_file_name_inited = 1;
-
-	if (innobase_repl_n_wait_threads > 0) {
-		/* Let us check if some of the waiting threads doing a trx
-		commit can now proceed */
-
-		cmp = strcmp(innobase_repl_file_name,
-					innobase_repl_wait_file_name);
-		if (cmp > 0
-			|| (cmp == 0 && innobase_repl_pos
-				>= innobase_repl_wait_pos)) {
-
-			/* Yes, at least one waiting thread can now proceed:
-			let us release all waiting threads with a broadcast */
-
-			can_release_threads = 1;
-
-			innobase_repl_wait_file_name_inited = 0;
-		}
-	}
-
-	pthread_mutex_unlock(&innobase_repl_cond_mutex);
-
-	if (can_release_threads) {
-
-		pthread_cond_broadcast(&innobase_repl_cond);
-	}
-
-	return(0);
-}
-#endif /* HAVE_REPLICATION */
 
 /*********************************************************************
 Rolls back a transaction or the latest SQL statement. */