!18 delete redundant files

From: @zppzhangpan 
Reviewed-by: @sunsuwan 
Signed-off-by: @sunsuwan

libnet.spec

@@ -1,6 +1,6 @@
 Name:           libnet
 Version:        1.2
-Release:        2
+Release:        3
 Summary:        A C library to help with construction and handling of network packets
 License:        BSD
 URL:            https://github.com/libnet/libnet/
@@ -59,7 +59,6 @@ rm -f doc/html/Makefile*
 %{_libdir}/%{name}.so.*
 
 %files devel
-%doc __dist_sample/sample/
 %{_libdir}/%{name}.so
 %{_libdir}/pkgconfig/%{name}.pc
 %{_bindir}/%{name}-config
@@ -71,6 +70,9 @@ rm -f doc/html/Makefile*
 %doc %{_docdir}/*
 
 %changelog
+* Wed Jun 05 2024 zhangpan<zhangpan103@h-partners.com> - 1.2-3
+- delete redundant files
+
 * Wed Dec 27 2023 lvgenggeng<lvgenggeng@uniontech.com> - 1.2-2
 - backport: fix possible overflows