common: Drop determine_sysper() and determine_pci_clock_per()

These arch-specific declarations 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 7eab4eb..b45f392 100644
--- a/include/common.h
+++ b/include/common.h
@@ -663,12 +663,6 @@
 #endif
 
 #if defined(CONFIG_4xx)
-#  if defined(CONFIG_440)
-#	if defined(CONFIG_440SPE)
-	 unsigned long determine_sysper(void);
-	 unsigned long determine_pci_clock_per(void);
-#	endif
-#  endif
 typedef PPC4xx_SYS_INFO sys_info_t;
 int	ppc440spe_revB(void);
 void	get_sys_info  ( sys_info_t * );