Update Backers.

Author: trekhleb

BACKERS.md

@@ -17,9 +17,6 @@
     <a href="https://github.com/bullwinkle">
       <img
         src="https://avatars1.githubusercontent.com/u/3613558?s=60&amp;v=4"
-        alt="@bullwinkle"
-        class="avatar avatar-user"
-        style="border-radius:50%"
         width="30"
         height="30"
       />