m68k/irq: Remove obsolete support for user vector interrupt fixups

It was used on Apollo only, before its conversion to genirq.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
diff --git a/arch/m68k/include/asm/irq.h b/arch/m68k/include/asm/irq.h
index 94349a5..6198df5 100644
--- a/arch/m68k/include/asm/irq.h
+++ b/arch/m68k/include/asm/irq.h
@@ -70,9 +70,7 @@
 extern void m68k_irq_shutdown(struct irq_data *data);
 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
 						      struct pt_regs *));
-extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
-				      void (*handler)(unsigned int,
-						      struct pt_regs *));
+extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
 extern void m68k_setup_irq_controller(struct irq_chip *,
 				      void (*handle)(unsigned int irq,
 						     struct irq_desc *desc),