Perf - More fixes for alerts-page-sk.

Bug: skia:9219
Change-Id: I66a44f2c6c17be5bdc062333d1b4a682b17dfb17
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/234060
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
diff --git a/perf/modules/alerts-page-sk/alerts-page-sk.js b/perf/modules/alerts-page-sk/alerts-page-sk.js
index 25cf034..01d660a 100644
--- a/perf/modules/alerts-page-sk/alerts-page-sk.js
+++ b/perf/modules/alerts-page-sk/alerts-page-sk.js
@@ -175,7 +175,7 @@
       headers:{
         'Content-Type': 'application/json'
       }
-    }).then(jsonOrThrow).then(() => {
+    }).then(() => {
       this._list()
     }).catch(errorMessage);
   }
@@ -186,9 +186,7 @@
     }
     fetch(`/_/alert/delete/${e.target.__config.id}`, {
       method: 'POST',
-    }).then(() => {
-      this._list()
-    }).catch(errorMessage);
+    }).then(() => this._list()).catch(errorMessage);
   }
 
   /** @prop cfg {string} The alert config being edited. */