removes grafana alert example

grafana.json

@@ -1,17 +0,0 @@
-{
-  "title": "My alert",
-  "ruleId": 1,
-  "ruleName": "Load peaking!",
-  "ruleUrl": "http://url.to.grafana/db/dashboard/my_dashboard?panelId=2",
-  "state": "alerting",
-  "imageUrl": "http://s3.image.url",
-  "message": "Load is peaking. Make sure the traffic is real and spin up more webfronts",
-  "evalMatches": [
-    {
-      "metric": "requests",
-      "tags": {},
-      "value": 122
-    }
-  ]
-}
-