samples/bpf: Remove unused variable in xdp2skb_meta_kern.c
The variable is never referenced in the code, just remove it.
Signed-off-by: Zhu Jun <zhujun2@cmss.chinamobile.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241111061514.3257-1-zhujun2@cmss.chinamobile.com
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