client: client_write() does not necessary for export.

src/client.c

@@ -773,7 +773,10 @@ static void client_write_output(struct client *client)
 	client->send_buf_used = 0;
 }
 
-void client_write(struct client *client, const char *buffer, size_t buflen)
+/**
+ * Write a block of data to the client.
+ */
+static void client_write(struct client *client, const char *buffer, size_t buflen)
 {
 	/* if the client is going to be closed, do nothing */
 	if (client_is_expired(client))

src/client.h

@@ -46,11 +46,6 @@ unsigned client_get_permission(const struct client *client);
 void client_set_permission(struct client *client, unsigned permission);
 
 /**
- * Write a block of data to the client.
- */
-void client_write(struct client *client, const char *data, size_t length);
-
-/**
  * Write a C string to the client.
  */
 void client_puts(struct client *client, const char *s);