[ARM] Osiris: Fix double initialisation in machine block

The .init_machine entry in mach-osiris.c had the same entry
twice, so remove one definition to fix the following warning
from sparse:

mach-osiris.c:416:3: warning: Initializer entry defined twice
mach-osiris.c:418:3:   also defined here
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/mach-s3c2440/mach-osiris.c

@@ -413,7 +413,6 @@ MACHINE_START(OSIRIS, "Simtec-OSIRIS")
 	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 	.boot_params	= S3C2410_SDRAM_PA + 0x100,
 	.map_io		= osiris_map_io,
-	.init_machine	= osiris_init,
 	.init_irq	= s3c24xx_init_irq,
 	.init_machine	= osiris_init,
 	.timer		= &s3c24xx_timer,