chore(stylelint): remove stylelint less configuration

Author: wood3n

.stylelintrc.js

@@ -1,13 +1,6 @@
 module.exports = {
   extends: ['stylelint-config-standard'],
   plugins: ['stylelint-prettier'],
-  customSyntax: 'postcss-less',
-  overrides: [
-    {
-      files: ['*.less', '**/*.less'],
-      customSyntax: 'postcss-less',
-    },
-  ],
   rules: {
     'rule-empty-line-before': [
       'always',