netsniff-ng: 0.6.5 -> 0.6.6 (#61342)

* netsniff-ng: 0.6.5 -> 0.6.6
Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/netsniff-ng/versions

* netsniff-ng: drop glibc patch
It has been fixed upstream
+ cleanup build inputs
+ perl not needed to build anymore