ARM: shmobile: Kconfig: Get rid of old comment

Remove comment that used to be part of non-multiplatform
kernel support. Now with multiplatform-only we have no
Renesas-specific System Configuration entries.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/Kconfig

@@ -99,6 +99,4 @@ config ARCH_SH73A0
 	bool "SH-Mobile AG5 (R8A73A00)"
 	select ARCH_RMOBILE
 	select RENESAS_INTC_IRQPIN
-
-comment "Renesas ARM SoCs System Configuration"
 endif