ARM: sa11x0/pxa: get rid of get_clock_tick_rate

The last user of this function is gone, so remove it. The clock API
should now be used to get clock rates.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>

arch/arm/mach-sa1100/include/mach/hardware.h

@@ -43,10 +43,6 @@
 # define __REG(x)	(*((volatile unsigned long __iomem *)io_p2v(x)))
 # define __PREG(x)	(io_v2p((unsigned long)&(x)))
 
-static inline unsigned long get_clock_tick_rate(void)
-{
-	return 3686400;
-}
 #else
 
 # define __REG(x)	io_p2v(x)