Revert "Add undefined check to getZuulStatus"

This reverts commit 09bc125f2e4c21404d0b137847e2c92a1a33e072.

Reason for revert: <INSERT REASONING HERE>

Change-Id: Ifff29a3c48c4e2e9427bd7d79b06988c31b8db02
diff --git a/src/main/resources/static/zuul-status-view.js b/src/main/resources/static/zuul-status-view.js
index 3c8575c..e5df740 100644
--- a/src/main/resources/static/zuul-status-view.js
+++ b/src/main/resources/static/zuul-status-view.js
@@ -185,8 +185,6 @@
      * @return {Promise} Resolves to a fetch Response object.
      */
     async getZuulStatus(change, revision) {
-      if (!change || !revision) return [];
-
       const response = await this._getReponse(change, revision);
 
       if (response && response.status && response.status === 200) {