mailctl: delete unused source files

This was forgotten when the mailctl attribute was removed.

pkgs/tools/networking/mailctl/default.nix

@@ -1,97 +0,0 @@
-{ mkDerivation
-, fetchFromGitHub
-, aeson
-, base
-, base64
-, bytestring
-, containers
-, directory
-, hsyslog
-, http-conduit
-, lib
-, network-uri
-, optparse-applicative
-, pretty-simple
-, process
-, random
-, strings
-, template-haskell
-, text
-, time
-, twain
-, unix
-, utf8-string
-, warp
-, yaml
-}:
-mkDerivation rec {
-  pname = "mailctl";
-  version = "0.9.2";
-
-  src = fetchFromGitHub {
-    owner = "pdobsan";
-    repo = "mailctl";
-    rev = version;
-    hash = "sha256-frT+fRJpixSvpb2+C34Z47zbMqvmDHdESItXb9YVbfU=";
-  };
-
-  isLibrary = true;
-  isExecutable = true;
-
-  libraryHaskellDepends = [
-    aeson
-    base
-    base64
-    bytestring
-    containers
-    directory
-    hsyslog
-    http-conduit
-    network-uri
-    optparse-applicative
-    pretty-simple
-    process
-    random
-    strings
-    template-haskell
-    text
-    time
-    twain
-    unix
-    utf8-string
-    warp
-    yaml
-  ];
-
-  executableHaskellDepends = [
-    aeson
-    base
-    base64
-    bytestring
-    containers
-    directory
-    hsyslog
-    http-conduit
-    network-uri
-    optparse-applicative
-    pretty-simple
-    process
-    random
-    strings
-    template-haskell
-    text
-    time
-    twain
-    unix
-    utf8-string
-    warp
-    yaml
-  ];
-
-  description = "OAuth2 tool for mail clients";
-  homepage = "https://github.com/pdobsan/mailctl";
-  changelog = "https://github.com/pdobsan/mailctl/releases/tag/${version}";
-  license = lib.licenses.bsd3;
-  maintainers = with lib.maintainers; [ aidalgol ];
-  mainProgram = "mailctl";
-}