bpf: Cleanup unused function declaration

All usage and the definition of `bpf_prog_free_linfo()` has been removed
in commit e16301fbe183 ("bpf: Simplify freeing logic in linfo and
jited_linfo"). Clean up its declaration in the header file.

Signed-off-by: Ruiqi Gong <[e-mail]>
Signed-off-by: Daniel Borkmann <[e-mail]>
Acked-by: Stanislav Fomichev <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]/
Link: https://lore.kernel.org/bpf/[e-mail]

include/linux/filter.h

···
 
 bool bpf_opcode_in_insntable(u8 code);
 
-void bpf_prog_free_linfo(struct bpf_prog *prog);
 void bpf_prog_fill_jited_linfo(struct bpf_prog *prog,
 			       const u32 *insn_to_jit_off);
 int bpf_prog_alloc_jited_linfo(struct bpf_prog *prog);