Revert of plugins/update-widgets-crash.html victim element goes missi…

…ng (patchset #1 id:1 of https://codereview.chromium.org/1122483002/)

Reason for revert:
Didn't quite fix the issue: same failure appeared on the build bots.  Reverting here to fix via TestExpectations instead.

Original issue's description:
> plugins/update-widgets-crash.html victim element goes missing
> 
> The victim element to be removed is non-existant sometimes after the bugs
> listed resolved. Workaround for now, by testing that the "victim" element
> exists to avoid an exception, which causes extra test console output, and
> fails the test. See issue 476590 #46 for a bot failure example.
> 
> TBR=haraken@chromium.org
> BUG=457054, 476590
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=194807

TBR=haraken@chromium.org,bbudge@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457054, 476590

Review URL: https://codereview.chromium.org/1120963002

git-svn-id: svn://svn.chromium.org/blink/trunk@194809 bbb929c8-8fbe-4397-9dbb-9b2b20218538

LayoutTests/plugins/update-widgets-crash.html

@@ -23,8 +23,7 @@
             return;
 
         var victim = document.getElementById('victim');
-        if (victim)
-            victim.parentNode.removeChild(victim);
+        victim.parentNode.removeChild(victim);
         document.body.offsetTop;
 
         if (window.testRunner)