Remove call to generate_session_report() due to excessive load

That func updates an Open States data quality table, which we do not actively use

app.py

@@ -302,10 +302,3 @@ def do_import(jurisdiction_id: str, datadir: str) -> None:
     Jurisdiction.objects.filter(id=jurisdiction_id).update(
         latest_bill_update=datetime.datetime.utcnow()
     )
-
-    # compile info on all sessions that were updated in this run
-    seen_sessions = set()
-    seen_sessions.update(bill_importer.get_seen_sessions())
-    seen_sessions.update(vote_event_importer.get_seen_sessions())
-    for session in seen_sessions:
-        generate_session_report(session)