[mailman3] Remove the duplicated information

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

roles/mailman3/files/generate_search_index.py

@@ -37,7 +37,6 @@ def get_mailinglists() -> list:
 def generate_index(mailinglists: list) -> None:
     """Generate indexes for the lists one by one."""
     for mailinglist in mailinglists:
-        print("Generating index for {0}".format(mailinglist))
         print("Generating index for {0} [{1}/{2}]".format(
             mailinglist, mailinglists.index(mailinglist) + 1, len(mailinglists)
             )