Notification Channel: Make test button wider (#22653)

* Remove width

public/app/features/alerting/partials/notification_edit.html

@@ -69,7 +69,7 @@
 
     <div class="gf-form-group gf-form-button-row">
 			<button type="submit" ng-click="ctrl.save()" class="btn btn-primary width-7">Save</button>
-			<button type="submit" ng-click="ctrl.testNotification()" class="btn btn-secondary width-7">Send Test</button>
+			<button type="submit" ng-click="ctrl.testNotification()" class="btn btn-secondary">Send Test</button>
 			<button type="delete" ng-if="!ctrl.isNew" ng-click="ctrl.deleteNotification()" class="btn btn-danger width-7">Delete</button>
 			<a href="alerting/notifications" class="btn btn-inverse">Back</a>
     </div>