tests/functional: drop unused 'get_tag' method

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250228102738.3064045-7-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed