Remove duplicated import

packages/grafana-ui/src/components/index.scss

@@ -5,5 +5,4 @@
 @import 'Select/Select';
 @import 'PanelOptionsGroup/PanelOptionsGroup';
 @import 'PanelOptionsGrid/PanelOptionsGrid';
-@import 'PanelOptionsGrid/PanelOptionsGrid';
 @import 'ColorPicker/ColorPicker';