powerpc/powermac: Remove empty function note_scsi_host()

note_scsi_host() has been an empty function since
commit 6ee0d9f7 ("[POWERPC] Remove unused old code
from powermac setup code").

Remove it.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/26f8b72a4276c0bd8ed63860c7316f6361c351b4.1655978907.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/setup.h

@@ -12,7 +12,6 @@ extern unsigned long long memory_limit;
 extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
 
 struct device_node;
-extern void note_scsi_host(struct device_node *, void *);
 
 /* Used in very early kernel initialization. */
 extern unsigned long reloc_offset(void);

arch/powerpc/platforms/powermac/setup.c

@@ -320,13 +320,6 @@ static void __init pmac_setup_arch(void)
 #endif /* CONFIG_ADB */
 }
 
-#ifdef CONFIG_SCSI
-void note_scsi_host(struct device_node *node, void *host)
-{
-}
-EXPORT_SYMBOL(note_scsi_host);
-#endif
-
 static int initializing = 1;
 
 static int pmac_late_init(void)

drivers/scsi/mesh.c

@@ -1882,11 +1882,6 @@ static int mesh_probe(struct macio_dev *mdev, const struct of_device_id *match)
 		goto out_release;
 	}
 	
-	/* Old junk for root discovery, that will die ultimately */
-#if !defined(MODULE)
-       	note_scsi_host(mesh, mesh_host);
-#endif
-
 	mesh_host->base = macio_resource_start(mdev, 0);
 	mesh_host->irq = macio_irq(mdev, 0);
        	ms = (struct mesh_state *) mesh_host->hostdata;