ppc/ppc405: Remove taihu machine

It has been deprecated since 7.0.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220809153904.485018-2-clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 5ce4227..1729c09 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1282,7 +1282,7 @@
 
 PowerPC Machines
 ----------------
-405 (ref405ep and taihu)
+405 (ref405ep)
 L: qemu-ppc@nongnu.org
 S: Orphan
 F: hw/ppc/ppc405_boards.c