SPEAr: Remove unused flag (CONFIG_SYS_HZ_CLOCK)

SPEAr doesn't need CONFIG_SYS_HZ_CLOCK. This commit removes it.
Signed-off-by: NVipin Kumar <vipin.kumar@st.com>
Signed-off-by: NAmit Virdi <amit.virdi@st.com>
Acked-by: NStefan Roese <sr@denx.de>
Signed-off-by: NStefan Roese <sr@denx.de>

include/configs/spear-common.h

@@ -60,7 +60,6 @@
 
 /* Timer, HZ specific defines */
 #define CONFIG_SYS_HZ				(1000)
-#define CONFIG_SYS_HZ_CLOCK			(8300000)
 
 /* Flash configuration */
 #if defined(CONFIG_FLASH_PNOR)