Drop of yast2-sound

Hi, I would like to announce that after many years the last use case of yast2-sound ( finding proper kernel driver for hardware ) gone[1] and we as yast team do not see reason to still maintain it. For this reason we create delete request for this yast module[2]. If there is still someone who finds module useful and willing to maintain it, please contact us. We can give you access to github repo and also move maintainership to you. For Leap 15.X nothing changes and module is still part of it same as for SLE15 codebase. Thanks Josef [1] https://bugzilla.suse.com/show_bug.cgi?id=1206903 [2] https://build.opensuse.org/request/show/1060978