#### Describe the bug

Upgrading from version 0.21.4 to 0.22.0 fails to compile a TypeScript app.

#### To Reproduce

Have a code that looks like this

```ts
import axios from 'axios';

const func = () => {
  delete axios.defaults.headers.common.Authorization;
}
```

Request responses are also incorrectly inferred after this update. Instead of `any`, data will be set to `Params`.

```ts
import axios from 'axios';

export const request = async (params: Params): Promise<Response> => {
  const { data } = await axios.put('urlPath', params);
  return data;
};
```

#### Expected behavior

There should be no breaking changes as change log doesn't mention them.

#### Environment
 - Axios Version [e.g. 0.18.0] 0.22.0
 - Adapter [e.g. XHR/HTTP] -
 - Browser [e.g. Chrome, Safari] -
 - Browser Version [e.g. 22] -
 - Node.js Version [e.g. 13.0.1] -
 - OS: [e.g. iOS 12.1.0, OSX 10.13.4] -
 - Additional Library Versions [e.g. React 16.7, React Native 0.58.0] React 17.0.2

#### Additional context/Screenshots
Add any other context about the problem here. If applicable, add screenshots to help explain.

Gruntfile.js
'dom'
          ]
        },
        src: ['typings/index.d.ts', 'test/typescript/*.ts']
      }
    },
    package2bower: {
      all: {
        fields: [
          'name',
          'description',
          'version',
          'homepage',
          'license',
          'keywords'
        ]
      }
    },
    package2env: {
      all: {}
    },
    usebanner: {
      all: {
        options: {
          banner: '<%= meta.banner %>',
          linebreak: false
        },
        files: {
          src: ['dist/*.js']
        }