ARM: SPEAR6xx: remove duplicated #include

Remove duplicated #include('s) in
  arch/arm/mach-spear6xx/spear6xx.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-spear6xx/spear6xx.c

@@ -13,7 +13,6 @@
 
 #include <linux/types.h>
 #include <linux/amba/pl061.h>
-#include <linux/types.h>
 #include <linux/ptrace.h>
 #include <linux/io.h>
 #include <asm/hardware/vic.h>