https://crbug.com/475128 has been fixed (#19946)

Remove its entry from the Wall of Browser Bugs.
Refs #16180

[skip sauce]

docs/_data/browser-bugs.yml

@@ -158,16 +158,6 @@
   origin: >
     Bootstrap#15832
 
--
-  browser: >
-    Chrome
-  summary: >
-    Focus ring of image map within a modal is displayed in the wrong location.
-  upstream_bug: >
-    Chromium#475128
-  origin: >
-    Bootstrap#16180
-
 -
   browser: >
     Chrome