ARM: OMAP: Remove non-static declaration of clocks

"clocks" should be static. It is currenly needed only for
CONFIG_OMAP_RESET_CLOCKS. A follow-up patch will fix
CONFIG_OMAP_RESET_CLOCKS while keeping clocks static.
Signed-off-by: Tony Lindgren <tony@atomide.com>

include/asm-arm/arch-omap/clock.h

@@ -48,8 +48,6 @@ struct clk_functions {
 };
 
 extern unsigned int mpurate;
-extern struct list_head clocks;
-extern spinlock_t clockfw_lock;
 
 extern int clk_init(struct clk_functions * custom_clocks);
 extern int clk_register(struct clk *clk);