sh: Kill off stray mach-rsk7203 reference.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Makefile

@@ -113,7 +113,6 @@ machdir-$(CONFIG_SH_HIGHLANDER)			+= mach-highlander
 machdir-$(CONFIG_SH_MIGOR)			+= mach-migor
 machdir-$(CONFIG_SH_SDK7780)			+= mach-sdk7780
 machdir-$(CONFIG_SH_X3PROTO)			+= mach-x3proto
-machdir-$(CONFIG_SH_RSK7203)			+= mach-rsk7203
 machdir-$(CONFIG_SH_SH7763RDP)			+= mach-sh7763rdp
 machdir-$(CONFIG_SH_SH4202_MICRODEV)		+= mach-microdev
 machdir-$(CONFIG_SH_LANDISK)			+= mach-landisk