removed _responsive.less import

Author: Karlasa

lib/web/mage/gallery/gallery.less

@@ -7,7 +7,6 @@
 @import '../../css/source/lib/_lib.less'; // Global lib
 @import '../../css/source/_theme.less'; // Theme overrides
 @import '../../css/source/_variables.less'; // Local theme variables
-@import '../../css/source/lib/_responsive.less';
 @import 'module/_mixins.less'; //Mixins in gallery
 @import 'module/_extends.less';
 @import 'module/_focus.less';