Remove suppression for issue 46421. Issue was unreproducible, and recent valgrind bot runs do not show the suppression being triggerred (e.g. http://build.chromium.org/buildbot/memory/builders/Chromium%20OS%20UI%20(valgrind)(3)/builds/3971).
Remove suppression for issue 46421.
Issue was unreproducible, and recent valgrind bot runs do not show the
suppression being triggerred (e.g.
http://build.chromium.org/buildbot/memory/builders/Chromium%20OS%20UI%20(valgrind)(3)/builds/3971).

BUG=46421
TEST=none

Review URL: http://codereview.chromium.org/2803029

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@51150 0039d316-1c4b-4281-b951-d872f2087c98

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