bpftool: Remove unused includes to <bpf/bpf_gen_internal.h>

mainline inclusion
from mainline-5.16-rc1
commit c66a248f
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=c66a248f1950d41502fb67624147281d9de0e868

-------------------------------------------------

It seems that the header file was never necessary to compile bpftool,
and it is not part of the headers exported from libbpf. Let's remove the
includes from prog.c and gen.c.

Fixes: d510296d ("bpftool: Use syscall/loader program in "prog load" and "gen skeleton" command.")
Signed-off-by: NQuentin Monnet <quentin@isovalent.com>
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-3-quentin@isovalent.com
(cherry picked from commit c66a248f)
Signed-off-by: NWang Yufen <wangyufen@huawei.com>

tools/bpf/bpftool/gen.c

@@ -18,7 +18,6 @@
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <bpf/btf.h>
-#include <bpf/bpf_gen_internal.h>
 
 #include "json_writer.h"
 #include "main.h"

tools/bpf/bpftool/prog.c

@@ -25,7 +25,6 @@
 #include <bpf/bpf.h>
 #include <bpf/btf.h>
 #include <bpf/libbpf.h>
-#include <bpf/bpf_gen_internal.h>
 #include <bpf/skel_internal.h>
 
 #include "cfg.h"