console-server: Remove unused variable

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/console-server.c b/console-server.c
index 29462cc..3857de1 100644
--- a/console-server.c
+++ b/console-server.c
@@ -86,7 +86,6 @@
 	char *tty_device_reldir;
 	int rc;
 
-	rc = -1;
 	tty_class_device_link = NULL;
 	tty_device_tty_dir = NULL;
 	tty_device_reldir = NULL;