🚮 remove unused blank line

config/config.ts

@@ -1,6 +1,5 @@
 import { IConfig, IPlugin } from 'umi-types';
 import defaultSettings from './defaultSettings'; // https://umijs.org/config/
-
 import slash from 'slash2';
 import themePluginConfig from './themePluginConfig';
 import proxy from './proxy';