Fix flaky monitor test (#1481)

Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: api-clients-generation-pipeline[bot]

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2023-05-24 14:20:21.063926",
-            "spec_repo_commit": "89276ce5"
+            "regenerated": "2023-05-24 14:57:13.521035",
+            "spec_repo_commit": "a5ef3fab"
         },
         "v2": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2023-05-24 14:20:21.079435",
-            "spec_repo_commit": "89276ce5"
+            "regenerated": "2023-05-24 14:57:13.535784",
+            "spec_repo_commit": "a5ef3fab"
         }
     }
 }

tests/v1/features/monitors.feature

@@ -191,7 +191,6 @@ Feature: Monitors
     When the request is sent
     Then the response status is 200 OK
     And the response "id" has the same value as "monitor.id"
-    And the response "matching_downtimes" has length 0
 
   @replay-only @team:DataDog/monitor-app
   Scenario: Get a monitor's details with downtime returns "OK" response