chore(ionicons): remove the import of ionicons css (ionic-team#669)

Author: brandyscarney

config/sass.config.js

@@ -42,7 +42,6 @@ module.exports = {
  */
  includePaths: [
  'node_modules/ionic-angular/themes',
- 'node_modules/ionicons/dist/scss',
  'node_modules/ionic-angular/fonts'
  ],