fix: remove blue background from export drop-down (#3629)

Author: maze-runnar

app/templates/events/view/tickets/orders.hbs

@@ -8,7 +8,7 @@
     <div class="eight wide {{unless device.isMobile 'right aligned'}} column">
       <div class="{{if device.isMobile 'ui padded grid'}}">
         <div class="row">
-          {{#ui-dropdown class='blue compact selection eight wide column'}}
+          {{#ui-dropdown class='compact selection eight wide column'}}
             <div class="default text">
               {{t 'Export As'}}
             </div>