Remove identity from OpenAPI Schemas

identity toast-type {
  description
      "Base for all bread types supported by the toaster.
       New bread types not listed here nay be added in the
       future.";
}

identity white-bread {
  base toast:toast-type;
  description "White bread.";
} 

"toast-type": {
    "enum": [
       "toast-type",
       "wonder-bread",
       "frozen-bagel",
       "frozen-waffle",
       "white-bread",
       "wheat-bread",
       "hash-brown"
    ],
    "description": "Base for all bread types supported by the toaster.\nNew bread types not listed here nay be added in the\nfuture.",
    "title": "toast-type",
    "type": "string"
},
"white-bread": {
    "enum": [
       "white-bread"
    ],
    "description": "White bread.",
    "title": "white-bread",
    "type": "string"
}

"toaster_make-toast_input": {
    "properties": {
       "toasterDoneness": {
          "description": "This variable controls how well-done is the\n      ensuing toast. It should be on a scale of 1 to 10.\n      Toast made at 10 generally is considered unfit\n      for human consumption; toast made at 1 is warmed\n      lightly.",
          "format": "int64",
          "default": 5,
          "example": 1,
          "type": "integer"
       },
       "toasterToastType": {
          "$ref": "#/components/schemas/toast-type"
       }
    }
}

{
  "input": {
    "toasterDoneness": 1,
    "toasterToastType": "toast-type"
  }
} 

"toaster_make-toast_input": {
    "properties": {
       "toasterDoneness": {
          "description": "This variable controls how well-done is the\n      ensuing toast. It should be on a scale of 1 to 10.\n      Toast made at 10 generally is considered unfit\n      for human consumption; toast made at 1 is warmed\n      lightly.",
          "format": "int64",
          "default": 5,
          "example": 1,
          "type": "integer"
       },
       "toasterToastType": {
          "description": "This variable informs the toaster of the type of\n                   material that is being toasted. The toaster\n                   uses this information, combined with\n                   toasterDoneness, to compute for how\n                   long the material must be toasted to achieve\n                   the required doneness.",
          "default": "wheat-bread",
          "example": "toast-type",
          "type": "string"
       }
    }
}

  leaf toasterToastType {
    type identityref {
      base toast:toast-type;
    }
    default 'wheat-bread';
    description
      "This variable informs the toaster of the type of
             material that is being toasted. The toaster
             uses this information, combined with
             toasterDoneness, to compute for how
             long the material must be toasted to achieve
             the required doneness.";
  }
}