chore: rm non-maintainer from README

Author: Long Ho

.all-contributorsrc

@@ -26,16 +26,6 @@
         "test",
         "code"
       ]
-    },
-    {
-      "login": "donovanhiland",
-      "name": "Donovan Hiland",
-      "avatar_url": "https://avatars2.githubusercontent.com/u/17991396?v=4",
-      "profile": "https://github.com/donovanhiland",
-      "contributions": [
-        "code",
-        "test",
-      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -62,7 +62,6 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   <tr>
     <td align="center"><a href="https://github.com/pyrocat101"><img src="https://avatars0.githubusercontent.com/u/541540?v=4" width="100px;" alt=""/><br /><sub><b>Linjie Ding</b></sub></a><br /><a href="#infra-pyrocat101" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="https://github.com/formatjs/formatjs/commits?author=pyrocat101" title="Tests">⚠️</a> <a href="https://github.com/formatjs/formatjs/commits?author=pyrocat101" title="Code">💻</a></td>
     <td align="center"><a href="https://medium.com/@longho"><img src="https://avatars1.githubusercontent.com/u/198255?v=4" width="100px;" alt=""/><br /><sub><b>Long Ho</b></sub></a><br /><a href="#infra-longlho" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="https://github.com/formatjs/formatjs/commits?author=longlho" title="Tests">⚠️</a> <a href="https://github.com/formatjs/formatjs/commits?author=longlho" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/donovanhiland"><img src="https://avatars2.githubusercontent.com/u/17991396?v=4" width="100px;" alt=""/><br /><sub><b>Donovan Hiland</b></sub></a><br /><a href="https://github.com/formatjs/formatjs/commits?author=donovanhiland" title="Code">💻</a><a href="https://github.com/formatjs/formatjs/commits?author=longlho" title="Tests">⚠️</a></td>
   </tr>
 </table>