MIPS: ralink: Remove unused timer functions

The functions were originally used for the module unload path,
but are not referenced any more and just cause warnings:

arch/mips/ralink/timer.c:104:13: error: 'rt_timer_disable' defined but not used [-Werror=unused-function]
arch/mips/ralink/timer.c:74:13: error: 'rt_timer_free' defined but not used [-Werror=unused-function]

Cc: Paul Gortmaker <[e-mail]>
Fixes: 62ee73d284e7 ("MIPS: ralink: Make timer explicitly non-modular")
Signed-off-by: Arnd Bergmann <[e-mail]>
Cc: Paul Gortmaker <[e-mail]>
Cc: John Crispin <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/15041/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/ralink/timer.c

···
 	return err;
 }
 
-static void rt_timer_free(struct rt_timer *rt)
-{
-	free_irq(rt->irq, rt);
-}
-
 static int rt_timer_config(struct rt_timer *rt, unsigned long divisor)
 {
 	if (rt->timer_freq < divisor)
···
 	rt_timer_w32(rt, TIMER_REG_TMR0CTL, t);
 
 	return 0;
-}
-
-static void rt_timer_disable(struct rt_timer *rt)
-{
-	u32 t;
-
-	t = rt_timer_r32(rt, TIMER_REG_TMR0CTL);
-	t &= ~TMR0CTL_ENABLE;
-	rt_timer_w32(rt, TIMER_REG_TMR0CTL, t);
 }
 
 static int rt_timer_probe(struct platform_device *pdev)