common: microblaze: Drop arch-specific declarations

These are not needed and should not be in common.h. Drop them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/common.h b/include/common.h
index a413f1a..638c45b 100644
--- a/include/common.h
+++ b/include/common.h
@@ -438,11 +438,6 @@
 ulong	get_endaddr   (void);
 void	trap_init     (ulong);
 
-#if defined (CONFIG_MICROBLAZE)
-unsigned short	in16(unsigned int);
-void		out16(unsigned int, unsigned short value);
-#endif
-
 /* $(CPU)/cpu.c */
 static inline int cpumask_next(int cpu, unsigned int mask)
 {