Remove unnecessary function

pgsql-schema.sql

@@ -162,14 +162,5 @@ END
 $$ LANGUAGE plpgsql SECURITY INVOKER;
 
 
-CREATE OR REPLACE FUNCTION DELETE_CT_FLOW(
-                IN _ct_packet_id bigint
-        )
-RETURNS void AS $$
-  -- remember : table with most constraints first
-  DELETE FROM ulog2_ct WHERE ulog2_ct.ct_id = $1;
-$$ LANGUAGE SQL SECURITY INVOKER;
-
-
 -- Created by Pierre Chifflier <chifflier AT inl DOT fr>
 -- Adapted by Thomas Chevalier <contact AT tchevalier DOT fr>