ARM: imx: remove unused imx6q_clock_map_io()

imx6q_clock_map_io() becomes an empty function since imx6q clock driver
is moved to common clock framework.  It's used nowhere now.  Remove it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/clk-imx6q.c

@@ -56,8 +56,6 @@
 
 static void __iomem *ccm_base;
 
-void __init imx6q_clock_map_io(void) { }
-
 int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
 {
 	u32 val = readl_relaxed(ccm_base + CLPCR);

arch/arm/mach-imx/common.h

@@ -139,7 +139,6 @@ extern void imx_gpc_init(void);
 extern void imx_gpc_pre_suspend(void);
 extern void imx_gpc_post_resume(void);
 extern int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode);
-extern void imx6q_clock_map_io(void);
 
 extern void imx_cpu_die(unsigned int cpu);
 

arch/arm/mach-imx/mach-imx6q.c

@@ -218,7 +218,6 @@ static void __init imx6q_map_io(void)
 {
 	imx_lluart_map_io();
 	imx_scu_map_io();
-	imx6q_clock_map_io();
 }
 
 static const struct of_device_id imx6q_irq_match[] __initconst = {