irqdomain: Kill off duplicate definitions.

Presently irqdomain.h has duplicate definitions for irq_find_host() and
irq_set_default_host(), presumably from merge damage. Kill off the
duplicates.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

include/linux/irqdomain.h

@@ -144,9 +144,6 @@ static inline struct irq_domain *irq_domain_add_legacy_isa(
 
 extern void irq_domain_remove(struct irq_domain *host);
 
-extern struct irq_domain *irq_find_host(struct device_node *node);
-extern void irq_set_default_host(struct irq_domain *host);
-
 extern unsigned int irq_create_mapping(struct irq_domain *host,
 				       irq_hw_number_t hwirq);
 extern void irq_dispose_mapping(unsigned int virq);