runtest.py: Remove sanitizer factory properties.
runtest.py: Remove sanitizer factory properties.

BUG=375143
R=glider@chromium.org

Review URL: https://codereview.chromium.org/1145203002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@295330 0039d316-1c4b-4281-b951-d872f2087c98

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