MIPS: Sibyte: Remove duplicate but harmless line from Platform file.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/sibyte/Platform b/arch/mips/sibyte/Platform
index d03a075..af9ee6a 100644
--- a/arch/mips/sibyte/Platform
+++ b/arch/mips/sibyte/Platform
@@ -13,7 +13,6 @@
 		-I$(srctree)/arch/mips/include/asm/mach-sibyte		\
 		-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL
 
-platform-$(CONFIG_SIBYTE_SB1250)	+= sibyte/
 cflags-$(CONFIG_SIBYTE_SB1250)	+=					\
 		-I$(srctree)/arch/mips/include/asm/mach-sibyte		\
 		-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL