remove unnecessary code

apps/app/src/components/PageStatusAlert.module.scss

@@ -15,11 +15,6 @@
     }
     .grw-card-btn-container {
       text-align: center;
-
-      .btn {
-        // TODO: activate (https://redmine.weseek.co.jp/issues/128307)
-        // @include bs.button-size(bs.$btn-padding-y-lg, bs.$btn-padding-x-lg, bs.$btn-font-size-lg, bs.$btn-line-height-lg, bs.$btn-border-radius-lg);
-      }
     }
   }