test: selftests: Remove unused various in sockmap_verdict_prog.c

'lport' and 'rport' in bpf_prog1() of sockmap_verdict_prog.c is not
used, just remove them.
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220113031658.633290-1-imagedong@tencent.com

tools/testing/selftests/bpf/progs/sockmap_parse_prog.c

@@ -7,8 +7,6 @@ int bpf_prog1(struct __sk_buff *skb)
 {
 	void *data_end = (void *)(long) skb->data_end;
 	void *data = (void *)(long) skb->data;
-	__u32 lport = skb->local_port;
-	__u32 rport = skb->remote_port;
 	__u8 *d = data;
 	int err;