Drop no-longer-needed update workarounds

Signed-off-by: Adam Williamson <awilliam@redhat.com>

lib/utils.pm

@@ -517,8 +517,8 @@ sub _repo_setup_updates {
     # a hash of releases and update IDs. if no workarounds are needed
     # for any release, the hash can be empty and this will do nothing
     my %workarounds = (
-        "30" => ['FEDORA-2019-9ff3036c0a'],
-        "31" => ['FEDORA-2019-6f121fa8a0']
+        "30" => [],
+        "31" => []
     );
     # then we'll download each update for our release:
     my $advisories = $workarounds{$version};