Remove duplicate import in master_utils.py
Remove duplicate import in master_utils.py

In https://codereview.chromium.org/453513002, a duplicate import
for WebStatus was added, but wasn't caught until after it was
committed.  This change removes the redundant import.

BUG=425821

Review URL: https://codereview.chromium.org/666823009

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@292708 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build