MAINTAINERS: Remove obsolete stable branches

There are only very old and orphaned stable branches listed
in the MAINTAINERS file - so this section is pretty useless
nowadays. Let's remove it.

Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

MAINTAINERS

@@ -1574,28 +1574,6 @@ F: tcg/tci/
 F: tci.c
 F: disas/tci.c
 
-Stable branches
----------------
-Stable 1.0
-L: qemu-stable@nongnu.org
-T: git git://git.qemu-project.org/qemu-stable-1.0.git
-S: Orphan
-
-Stable 0.15
-L: qemu-stable@nongnu.org
-T: git git://git.qemu-project.org/qemu-stable-0.15.git
-S: Orphan
-
-Stable 0.14
-L: qemu-stable@nongnu.org
-T: git git://git.qemu-project.org/qemu-stable-0.14.git
-S: Orphan
-
-Stable 0.10
-L: qemu-stable@nongnu.org
-T: git git://git.qemu-project.org/qemu-stable-0.10.git
-S: Orphan
-
 Block drivers
 -------------
 VMDK