net: fq: Remove unused typedef fq_flow_get_default_t

Commitbf9009bf ("net/fq_impl: drop get_default_func, move default flow to fq_tin")
remove its last user, so can remove it.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230807142111.33524-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/fq.h

@@ -98,9 +98,4 @@ typedef bool fq_skb_filter_t(struct fq *,
 			     struct sk_buff *,
 			     void *);
 
-typedef struct fq_flow *fq_flow_get_default_t(struct fq *,
-					      struct fq_tin *,
-					      int idx,
-					      struct sk_buff *);
-
 #endif