Remove unused component

app/assets/javascripts/discourse/components/header-dropdown.js.es6

@@ -1,27 +0,0 @@
-export default Ember.Component.extend({
-  tagName: 'li',
-  classNameBindings: [':header-dropdown-toggle', 'active'],
-
-  active: Ember.computed.alias('toggleVisible'),
-
-  actions: {
-    toggle() {
-
-      if (this.siteSettings.login_required && !this.currentUser) {
-        this.sendAction('loginAction');
-      } else {
-        if (this.site.mobileView && this.get('mobileAction')) {
-          this.sendAction('mobileAction');
-          return;
-        }
-
-        if (this.get('action')) {
-          this.sendAction('action');
-        } else {
-          this.toggleProperty('toggleVisible');
-        }
-      }
-      this.appEvents.trigger('dropdowns:closeAll');
-    }
-  }
-});