fix(Renovator): Remove unknown property in config

Author: mrtnvh

package.json

@@ -154,20 +154,18 @@
     ]
   },
   "renovate": {
-    "default": {
-      "assignees": [
-        "vanhoofmaarten"
-      ],
-      "automerge": true,
-      "schedule": "before 3am on Monday",
-      "extends": [
-        "config:base",
-        "group:allNonMajor",
-        ":semanticCommitTypeAll(chore)"
-      ],
-      "npm": {
-        "commitMessageTopic": "{{prettyDepType}} {{depName}}"
-      }
+    "assignees": [
+      "vanhoofmaarten"
+    ],
+    "automerge": true,
+    "schedule": "before 3am on Monday",
+    "extends": [
+      "config:base",
+      "group:allNonMajor",
+      ":semanticCommitTypeAll(chore)"
+    ],
+    "npm": {
+      "commitMessageTopic": "{{prettyDepType}} {{depName}}"
     }
   }
 }