add temp endpoint for db cleanup

db/queries/query.sql

@@ -35,6 +35,11 @@ INSERT INTO "Updates" (
 )
 RETURNING *;
 
+-- name: CleanupUpdates :exec
+DELETE FROM "Updates"
+WHERE "UpdateType" = sqlc.arg('updateType') AND "UpdateTime" <= sqlc.arg('updateTime')
+RETURNING *;
+
 -- name: CreateEvent :one
 INSERT INTO "Events" (
     "CloudId", "Source", "EventTime", "ChainId", "VmId", "VmName", "EventKey", "DatacenterId", "DatacenterName", "ComputeResourceId", "ComputeResourceName", "UserName"