Removed extra pipes from regex. (#11181)

app/javascript/mastodon/features/emoji/emoji_mart_search_light.js

@@ -74,7 +74,7 @@ function search(value, { emojisToShowFilter, maxResults, include, exclude, custo
       return [emojisList['-1']];
     }
 
-    let values = value.toLowerCase().split(/[\s|,|\-|_]+/),
+    let values = value.toLowerCase().split(/[\s|,\-_]+/),
       allResults = [];
 
     if (values.length > 2) {