gmvault: drop

The git repo has not seen any commit since 2016.
It is insecure: https://github.com/gaubert/gmvault/issues/330
Login is mostly broken: https://github.com/gaubert/gmvault/issues/335

pkgs/tools/networking/gmvault/default.nix

@@ -1,31 +0,0 @@
-{ pkgs, fetchurl, pythonPackages }:
-
-pythonPackages.buildPythonApplication rec {
-  version = "1.9.1";
-  pname = "gmvault";
-
-  src = fetchurl {
-    url = "https://bitbucket.org/gaubert/gmvault-official-download/downloads/gmvault-v${version}-src.tar.gz";
-    name = "${pname}-${version}.tar.bz";
-    sha256 = "0ffp8df3gdf6lf3pj75hzsmxmvmscppb6bjda58my1n4ppxp1rji";
-  };
-
-  doCheck = false;
-
-  propagatedBuildInputs = with pythonPackages; [ gdata IMAPClient Logbook chardet ];
-
-  startScript = ./gmvault.py;
-
-  patchPhase = ''
-    cat ${startScript} > etc/scripts/gmvault
-    chmod +x etc/scripts/gmvault
-    substituteInPlace setup.py --replace "==" ">="
-    substituteInPlace setup.py --replace "argparse" ""
-  '';
-
-  meta = {
-    description = "Backup and restore your gmail account";
-    homepage = "http://gmvault.org";
-    license = pkgs.lib.licenses.agpl3Plus;
-  };
-}

pkgs/tools/networking/gmvault/gmvault.py

@@ -1,4 +0,0 @@
-#!/usr/bin/env python
-
-import gmv.gmv_cmd as runner
-runner.bootstrap_run()