names: Don't hard depend on systemd-resolved

Fixes: #2453

- It will be installed later.

Tests:

- Build the Debian package with all the changes and notice that it neither has
dependency on resolvconf nor on systemd-resolved.

- Version 24.18 can upgrade to this package using unattended-upgrade. For this
place the package in a folder repository and add this repository to apt
sources.list and tweak unattened-upgrades settings to accept the new repository.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Veiko Aasa <veiko17@disroot.org>

plinth/modules/names/__init__.py

@@ -62,8 +62,7 @@ class NamesApp(app_module.App):
         self.add(menu_item)
 
         # 'ip' utility is needed from 'iproute2' package.
-        packages = Packages('packages-names',
-                            ['systemd-resolved', 'libnss-resolve', 'iproute2'])
+        packages = Packages('packages-names', ['iproute2'])
         self.add(packages)
 
         domain_type = DomainType('domain-type-static', _('Domain Name'),