Removed fillmissing trigger and function

db_scripts/update_v11.sql

+INSERT INTO public.eea_times VALUES ('http://dd.eionet.europa.eu/vocabulary/uom/time/minute', 'Minute', 'm');
+
+drop trigger raven_update_time_and_fillmissing_trigger on observations;
+drop function raven_update_time_and_fillmissing();