Rename checked_logs => watched_logs

- We're logging that a given log has been included in any fetch calls
  for checked headers, rather than that we have already checked for
  that log

test_config/test_config.go

@@ -106,7 +106,6 @@ func CleanTestDB(db *postgres.DB) {
 	db.MustExec("DELETE FROM addresses")
 	db.MustExec("DELETE FROM blocks")
 	db.MustExec("DELETE FROM checked_headers")
-	db.MustExec("DELETE FROM checked_logs")
 	// can't delete from eth_nodes since this function is called after the required eth_node is persisted
 	db.MustExec("DELETE FROM full_sync_logs")
 	db.MustExec("DELETE FROM full_sync_receipts")
@@ -119,6 +118,7 @@ func CleanTestDB(db *postgres.DB) {
 	db.MustExec("DELETE FROM log_filters")
 	db.MustExec("DELETE FROM queued_storage")
 	db.MustExec("DELETE FROM watched_contracts")
+	db.MustExec("DELETE FROM watched_logs")
 }
 
 func CleanCheckedHeadersTable(db *postgres.DB, columnNames []string) {