Update Monitors_CreateOrUpdate_MaximumSet_Gen.json (#23787)

Remove managed identity from the example payload as those will be created by system automatically.

specification/newrelic/resource-manager/NewRelic.Observability/stable/2022-07-01/examples/Monitors_CreateOrUpdate_MaximumSet_Gen.json

@@ -45,12 +45,6 @@
         "orgCreationSource": "LIFTR",
         "accountCreationSource": "LIFTR"
       },
-      "identity": {
-        "type": "None",
-        "userAssignedIdentities": {
-          "key8903": {}
-        }
-      },
       "tags": {
         "key6976": "oaxfhf"
       },
@@ -99,17 +93,6 @@
           "orgCreationSource": "LIFTR",
           "accountCreationSource": "LIFTR"
         },
-        "identity": {
-          "principalId": "cac47a92-2856-11ed-a261-0242ac120002",
-          "tenantId": "cac47a92-2856-11ed-a261-0242ac120002",
-          "type": "None",
-          "userAssignedIdentities": {
-            "key8903": {
-              "principalId": "cac47a92-2856-11ed-a261-0242ac120002",
-              "clientId": "cac47a92-2856-11ed-a261-0242ac120002"
-            }
-          }
-        },
         "tags": {
           "key6976": "oaxfhf"
         },
@@ -171,17 +154,6 @@
           "orgCreationSource": "LIFTR",
           "accountCreationSource": "LIFTR"
         },
-        "identity": {
-          "principalId": "cac47a92-2856-11ed-a261-0242ac120002",
-          "tenantId": "cac47a92-2856-11ed-a261-0242ac120002",
-          "type": "None",
-          "userAssignedIdentities": {
-            "key8903": {
-              "principalId": "cac47a92-2856-11ed-a261-0242ac120002",
-              "clientId": "cac47a92-2856-11ed-a261-0242ac120002"
-            }
-          }
-        },
         "tags": {
           "key6976": "oaxfhf"
         },