[gallery] remove uneeded css/class (#1159)

Author: IzaacAyelin

packages/gallery/src/components/gallery/proGallery/slideshowView.js

@@ -986,10 +986,6 @@ class SlideshowView extends React.Component {
       classNames += ' gallery-columns';
     }
 
-    if (this.isFullWidthGallery()) {
-      classNames += ' streched';
-    }
-
     return classNames;
   }
   getStyles() {

packages/gallery/src/components/item/itemView.js

@@ -641,7 +641,6 @@ class ItemView extends React.Component {
         scrollDirection === GALLERY_CONSTS[optionsMap.layoutParams.structure.scrollDirection].HORIZONTAL
           ? itemSpacing / 2 + 'px'
           : 0,
-      cursor: this.isItemClickable(options),
     };
 
     const { avoidInlineStyles } = settings;