excluded challenge id 30171936 as per support ticket 81794

Author: m-yadav

tco_setup/tco21_eligible_contests.sql

@@ -486,6 +486,7 @@ WHERE p.project_status_id = 1
    and p.tc_direct_project_id not in ( 26910 ) --USBR Streamflow Forecasting challenges to be excluded
 -- and mod(p.project_id, 2) = 0
    and p.project_id not in (select ce.contest_id from contest_eligibility ce) --excluding private challenges
+   and p.project_id not in (30171936) --excluding as per support ticket 81794
 --   and p.project_id not in (30129332) --excluding practice contest
    and 1 = 1;