[TR]: Remove an unused export.

This patch removes the unused EXPORT_SYMBOL(tr_source_route).

(Note, the usage in net/llc/llc_output.c can't be modular.)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/802/tr.c

@@ -643,6 +643,5 @@ static int __init rif_init(void)
 
 module_init(rif_init);
 
-EXPORT_SYMBOL(tr_source_route);
 EXPORT_SYMBOL(tr_type_trans);
 EXPORT_SYMBOL(alloc_trdev);