MAINTAINERS: remove references to dropped marzen and bockw defconfigs

Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Nby: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

MAINTAINERS

@@ -1485,8 +1485,6 @@ F:	arch/arm/boot/dts/emev2*
 F:	arch/arm/boot/dts/r7s*
 F:	arch/arm/boot/dts/r8a*
 F:	arch/arm/boot/dts/sh*
-F:	arch/arm/configs/bockw_defconfig
-F:	arch/arm/configs/marzen_defconfig
 F:	arch/arm/configs/shmobile_defconfig
 F:	arch/arm/include/debug/renesas-scif.S
 F:	arch/arm/mach-shmobile/