fix(thread-list): Better hover state for quick actions

internal_packages/thread-list/stylesheets/thread-list.less

@@ -216,9 +216,7 @@
 
 
 // quick actions
-@reply-img: "../static/images/thread-list-quick-actions/ic-quick-button-reply@2x.png";
 @archive-img: "../static/images/thread-list-quick-actions/ic-quick-button-archive@2x.png";
-@forward-img: "../static/images/thread-list-quick-actions/ic-quick-button-forward@2x.png";
 @trash-img: "../static/images/thread-list-quick-actions/ic-quick-button-trash@2x.png";
 
 .thread-list .list-item .list-column-HoverActions {
@@ -234,12 +232,6 @@
   .action:last-child {
     margin-right:40px;
   }
-  .action.action-reply {
-    background: url(@reply-img) top left no-repeat, @background-gradient;
-  }
-  .action.action-forward {
-    background: url(@forward-img) top left no-repeat, @background-gradient;
-  }
   .action.action-archive {
     background: url(@archive-img) center no-repeat, @background-gradient;
   }
@@ -256,12 +248,6 @@ body.platform-win32 {
         margin-right: 30px;
       }
     }
-    .action.action-reply {
-      background: url(@reply-img) top left no-repeat;
-    }
-    .action.action-forward {
-      background: url(@forward-img) top left no-repeat;
-    }
     .action.action-archive {
       background: url(@archive-img) center no-repeat;
     }
@@ -298,6 +284,12 @@ body.platform-win32 {
   .action {
     -webkit-filter: invert(100%) brightness(300%);
   }
+  .action.action-archive {
+    background: url(@archive-img) center no-repeat;
+  }
+  .action.action-trash {
+    background: url(@trash-img) center no-repeat;
+  }
 }