bpf, btf: Remove the duplicate btf_ids.h include

mainline inclusion
from mainline-5.11-rc1
commit 666475cc
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=666475ccbf1dc99c1e61e47975d5fbf86d6236aa

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Remove duplicate btf_ids.h header which is included twice.
Signed-off-by: NWang Qing <wangqing@vivo.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/1604736650-11197-1-git-send-email-wangqing@vivo.com
(cherry picked from commit 666475cc)
Signed-off-by: NWang Yufen <wangyufen@huawei.com>

kernel/bpf/btf.c

@@ -22,7 +22,6 @@
 #include <linux/skmsg.h>
 #include <linux/perf_event.h>
 #include <linux/bsearch.h>
-#include <linux/btf_ids.h>
 #include <net/sock.h>
 
 /* BTF (BPF Type Format) is the meta data format which describes