MAINTAINERS: Remove reference to shmobile / koelsch_defconfig

koelsch_defconfig has been removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/MAINTAINERS b/MAINTAINERS
index a20df9b..3f73fb3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1381,7 +1381,6 @@
 F:	arch/arm/configs/ape6evm_defconfig
 F:	arch/arm/configs/armadillo800eva_defconfig
 F:	arch/arm/configs/bockw_defconfig
-F:	arch/arm/configs/koelsch_defconfig
 F:	arch/arm/configs/kzm9g_defconfig
 F:	arch/arm/configs/lager_defconfig
 F:	arch/arm/configs/mackerel_defconfig