test: disable azure-arc-onboarding addon in everything cluster config (#3756)

Author: jackfrancis

Diff for: test/e2e/test_cluster_configs/everything.json

@@ -64,19 +64,6 @@
 								"min-replicas": "1",
 								"nodes-per-replica": "8"
 							}
-						},
-						{
-							"name": "azure-arc-onboarding",
-							"enabled": true,
-							"config": {
-								"tenantID": "",
-								"subscriptionID": "",
-								"resourceGroup": "",
-								"clusterName": "",
-								"clientID": "",
-								"clientSecret": "",
-								"location": ""
-							}
 						}
 					],
 					"components": [