xtensa: remove unused platform_init_irq()

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

arch/xtensa/include/asm/platform.h

@@ -29,11 +29,6 @@ extern void platform_init(bp_tag_t*);
  */
 extern void platform_setup (char **);
 
-/*
- * platform_init_irq is called from init_IRQ.
- */
-extern void platform_init_irq (void);
-
 /*
  * platform_restart is called to restart the system.
  */

arch/xtensa/kernel/platform.c

@@ -29,7 +29,6 @@
  */
 
 _F(void, setup, (char** cmd), { });
-_F(void, init_irq, (void), { });
 _F(void, restart, (void), { while(1); });
 _F(void, halt, (void), { while(1); });
 _F(void, power_off, (void), { while(1); });