skype_call_recorder: drop

hasn't worked since 2017: https://atdot.ch/scr/2017/06/important-information-regarding-skype-version-5/
the version packaged here is also from 2008, as far as I can tell
the last upstream release was 2016

pkgs/top-level/aliases.nix

@@ -527,6 +527,7 @@ mapAliases ({
   skrooge2 = skrooge; # added 2017-02-18
   sky = throw "sky has been removed from nixpkgs (2020-09-16)";
   skype = skypeforlinux; # added 2017-07-27
+  skype_call_recorder = throw "skype_call_recorder has been removed from nixpkgs, because it stopped working when classic Skype was retired."; # added 2020-10-31
   skydive = throw "skydive has been removed from nixpkgs (2019-09-10)";
   slack-dark = slack; # added 2020-03-27
   slic3r-prusa3d = prusa-slicer; # added 2019-05-21

pkgs/top-level/all-packages.nix

@@ -23343,8 +23343,6 @@ in
 
   skype4pidgin = callPackage ../applications/networking/instant-messengers/pidgin-plugins/skype4pidgin { };
 
-  skype_call_recorder = callPackage ../applications/networking/instant-messengers/skype-call-recorder { };
-
   SkypeExport = callPackage ../applications/networking/instant-messengers/SkypeExport { };
 
   slmenu = callPackage ../applications/misc/slmenu {};