Temporarily remove the UnitBexierTest in order to fix the build.

TBR=abarth
BUG=303332

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=158991

Review URL: https://codereview.chromium.org/26129002

git-svn-id: svn://svn.chromium.org/blink/trunk@159029 bbb929c8-8fbe-4397-9dbb-9b2b20218538