js: Remove hover state class change.

QuLogic · QuLogic · commit c46699cded5f · 2020-04-25T00:05:39.000-04:00
This can be done with CSS selectors, so there's no need to add a class
via JS. The hover effect seems to work without it anyway.
diff --git a/lib/matplotlib/backends/web_backend/js/mpl.js b/lib/matplotlib/backends/web_backend/js/mpl.js
@@ -294,16 +294,6 @@ mpl.figure.prototype._init_toolbar = function () {
         fmt_picker.append(option);
     }
 
-    // Add hover states to the ui-buttons
-    $('.ui-button').hover(
-        function () {
-            $(this).addClass('ui-state-hover');
-        },
-        function () {
-            $(this).removeClass('ui-state-hover');
-        }
-    );
-
     var status_bar = $('<span class="mpl-message"/>');
     toolbar.append(status_bar);
     this.message = status_bar[0];
