message: remove redundant added types
diff: }
  }
  }
  - },
  - "ParentNode": {
  - "name": "ParentNode",
  - "exposed": "Window",
  - "properties": {
  - "property": {
  - "firstElementChild": {
  - "name": "firstElementChild",
  - "read-only": 1,
  - "override-type": "Element | null"
  - },
  - "lastElementChild": {
  - "name": "lastElementChild",
  - "read-only": 1,
  - "override-type": "Element | null"
  - },
  - "childElementCount": {
  - "name": "childElementCount",
  - "read-only": 1,
  - "override-type": "number"
  - }
  - }
  - },
  - "no-interface-object": "1"
  }
  }
  },
  }
  ]
  },
  - "BroadcastChannelEventMap": {
  - "name": "BroadcastChannelEventMap",
  - "properties": {
  - "property": {
  - "message": {
  - "name": "message",
  - "override-type": "MessageEvent"
  - },
  - "messageerror": {
  - "name": "messageerror",
  - "override-type": "MessageEvent"
  - }
  - }
  - },
  - "no-interface-object": "1"
  - },
  "CSSStyleDeclaration": {
  "name": "CSSStyleDeclaration",
  "properties": {
  }
  }
  },
  - "ElementCreationOptions": {
  - "name": "ElementCreationOptions",
  - "exposed": "Window",
  - "properties": {
  - "property": {
  - "is": {
  - "name": "is",
  - "override-type": "string",
  - "required": 0
  - }
  - }
  - },
  - "no-interface-object": "1"
  - },
  "HTMLMainElement": {
  "name": "HTMLMainElement",
  "extends": "HTMLElement",
  }
  ]
  },
  - "NodeSelector": {
  - "name": "NodeSelector",
  - "extends": "Object",
  - "no-interface-object": "1",
  - "methods": {
  - "method": {
  - "querySelectorAll": {
  - "signature": [
  - {
  - "param-min-required": 1,
  - "type": "NodeList",
  - "param": [
  - {
  - "name": "selectors",
  - "type": "DOMString",
  - "type-original": "DOMString"
  - }
  - ],
  - "type-original": "NodeList"
  - }
  - ],
  - "name": "querySelectorAll"
  - },
  - "querySelector": {
  - "signature": [
  - {
  - "nullable": 1,
  - "param-min-required": 1,
  - "type": "Element",
  - "param": [
  - {
  - "name": "selectors",
  - "type": "DOMString",
  - "type-original": "DOMString"
  - }
  - ],
  - "type-original": "Element?"
  - }
  - ],
  - "name": "querySelector"
  - }
  - }
  - },
  - "exposed": "Window"
  - },
  "CSS": {
  "name": "CSS",
  "methods": {
  