fix dupl

Author: mvorisek

.stylelintrc.js

@@ -22,7 +22,6 @@ module.exports = {
 
         // TODO rules to be removed/fixed in v2.10.0 as fixes are not compatible with IE11
         'alpha-value-notation': 'number', // https://caniuse.com/mdn-css_properties_opacity_percentages
-        'color-function-notation': 'legacy', // https://caniuse.com/mdn-css_types_color_rgba_space_separated_parameters
 
         // TODO
         'string-quotes': null, // 1676 errors