client: Don't attach stdin in connect_handler()

connect_handler() gets called when we're connected to D-Bus but before
introspection of the remote service (org.bluez) is complete. The
client_ready() callback otoh waits until the introspection is complete
and is already also taking care of attaching input.
diff --git a/client/main.c b/client/main.c
index 32341ad..056331f 100644
--- a/client/main.c
+++ b/client/main.c
@@ -120,9 +120,6 @@
 	printf("\r");
 	rl_on_new_line();
 	rl_redisplay();
-
-	if (!input)
-		input = setup_standard_input();
 }
 
 static void disconnect_handler(DBusConnection *connection, void *user_data)