clean old codes

browser/lib/fetchConfig.js

@@ -1,24 +0,0 @@
-const electron = require('electron')
-const remote = electron.remote
-const jetpack = require('fs-jetpack')
-
-const userDataPath = remote.app.getPath('userData')
-const configFile = 'config.json'
-
-const defaultConfig = {
-  'editor-font-size': '14',
-  'editor-font-family': 'Monaco, Consolas',
-  'editor-indent-type': 'space',
-  'editor-indent-size': '4',
-  'preview-font-size': '14',
-  'preview-font-family': 'Lato',
-  'switch-preview': 'blur',
-  'disable-direct-write': false,
-  'theme-ui': 'light',
-  'theme-code': 'xcode',
-  'theme-syntax': 'xcode'
-}
-
-export default function fetchConfig () {
-  return Object.assign({}, defaultConfig, JSON.parse(jetpack.cwd(userDataPath).read(configFile, 'utf-8')))
-}