Revert PR #408

This reverts the commits

- "alot: change msmtp default command"
  8e798e4c28

- "astroid: init"
  736e340bde

because they include changes that break some configurations and some
options that are misplaced.

modules/programs/astroid-accounts.nix

@@ -1,41 +0,0 @@
-{ config, lib, ... }:
-
-with lib;
-{
-
-  options.astroid = {
-    enable = mkEnableOption "Astroid";
-
-    sendMailCommand = mkOption {
-      type = types.nullOr types.str;
-      description = ''
-        Command to send a mail. If msmtp is enabled for the account,
-        then this is set to
-        <command>msmtpq --read-envelope-from --read-recipients</command>.
-      '';
-    };
-
-    extraConfig = mkOption {
-      type = types.attrs;
-      default = {};
-      example = ''
-        {
-          select_query = "";
-        }
-      '';
-      description = ''
-        Extra settings to add to this astroid account configuration.
-      '';
-    };
-
-  };
-
-
-  config = mkIf config.notmuch.enable {
-    astroid.sendMailCommand = mkOptionDefault (
-      if config.msmtp.enable
-      then "msmtpq --read-envelope-from --read-recipients"
-      else null
-    );
-  };
-}