[SPARC64]: Remove unused crap from asm/irq.h

include/asm-sparc64/irq.h

@@ -121,13 +121,6 @@ extern void disable_irq(unsigned int);
 extern void enable_irq(unsigned int);
 extern unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap);
 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
-extern unsigned int psycho_build_irq(void *psycho, int imap_off, int ino, int need_dma_sync);
-
-#ifdef CONFIG_SMP
-extern void set_cpu_int(int, int);
-extern void clear_cpu_int(int, int);
-extern void set_irq_udt(int);
-#endif
 
 extern int request_fast_irq(unsigned int irq,
 			    irqreturn_t (*handler)(int, void *, struct pt_regs *),