Remove single-table mode

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

plugins/outputs/clickhouse/clickhouse.go

@@ -206,7 +206,7 @@ func (ch *ClickHouse) generateCreateTable(tablename string, columns *orderedmap.
 		columnDefs = append(columnDefs, fmt.Sprintf("%s %s", quoteIdent(pair.Key), ch.toNullable(pair)))
 	}
 
-	orderBy := make([]string, 0, 3)
+	orderBy := make([]string, 0, 2)
 	if _, ok := columns.Get("host"); ok {
 		orderBy = append(orderBy, "host")
 	}