Remove unnecessary config file example.

example-config.json

@@ -1,22 +0,0 @@
-{
-  "connection_details": {
-    "engine": "trino",
-    "host": "trino.mercadao.pt",
-    "port": "443",
-    "user": "your user goes here",
-    "password": "your password goes here",
-    "http_scheme": "https",
-    "catalog": "app_lm_mysql",
-    "schema": "comprea"
-  },
-  "queries_to_measure": [
-    {
-      "name": "Fast Smoke Test",
-      "query_string": "SELECT * FROM system.runtime.nodes"
-    },
-    {
-      "name": "Carts on a day",
-      "query_string": "select * from app_lm_mysql.comprea.cart c where c.status = 'delivered' and c.date_delivered >= to_unixtime(date('2022-05-24'))"
-    }
-  ]
-}