ARM: shmobile: rcar-gen2: Drop unused OF includes

of_platform.h is not needed, so drop it.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230717225614.3214179-1-robh@kernel.orgSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/mach-shmobile/setup-rcar-gen2.c

@@ -16,7 +16,6 @@
 #include <linux/of.h>
 #include <linux/of_clk.h>
 #include <linux/of_fdt.h>
-#include <linux/of_platform.h>
 #include <linux/psci.h>
 #include <asm/mach/arch.h>
 #include <asm/secure_cntvoff.h>