calibre-web: 0.6.12 -> 0.6.13

calibre-web no longer starts without proper calibre DB path configured,
so the default testcase (completely unconfigured) is removed.

(cherry picked from commit 80f7656229efee8817880250b2ca097a69898330)

nixos/tests/calibre-web.nix

@@ -11,10 +11,6 @@ import ./make-test-python.nix (
         meta.maintainers = with pkgs.lib.maintainers; [ pborzenkov ];
 
         nodes = {
-          default = { ... }: {
-            services.calibre-web.enable = true;
-          };
-
           customized = { pkgs, ... }: {
             services.calibre-web = {
               enable = true;
@@ -33,12 +29,6 @@ import ./make-test-python.nix (
         testScript = ''
           start_all()
 
-          default.wait_for_unit("calibre-web.service")
-          default.wait_for_open_port(${toString defaultPort})
-          default.succeed(
-              "curl --fail 'http://localhost:${toString defaultPort}/basicconfig' | grep -q 'Basic Configuration'"
-          )
-
           customized.succeed(
               "mkdir /tmp/books && calibredb --library-path /tmp/books add -e --title test-book"
           )