There is no in-tree users of this helper since b13b41cc3dc18 ("misc:
ti_fpc202: Switch to of_fwnode_handle()"), and is replaced with
of_fwnode_handle().

Get rid of it.

Suggested-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 include/linux/irqdomain.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 9d6a5e99394fa..5907baf6099d9 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -730,12 +730,6 @@ static inline void msi_device_domain_free_wired(struct irq_domain *domain, unsig
 }
 #endif
 
-/* Deprecated functions. Will be removed in the merge window */
-static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
-{
-	return node ? &node->fwnode : NULL;
-}
-
 static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
 						     const struct irq_domain_ops *ops,
 						     void *host_data)
-- 
2.47.3