Make runtest.py error out on deprecated sanitizer factory properties.
Make runtest.py error out on deprecated sanitizer factory properties.

Making sure we don't silently break any internal bots when we remove support for
those factory properties.

Also, remove some redundant code related to TSan.

BUG=375143
R=kjellander@chromium.org
TBR=glider@chromium.org

Review URL: https://codereview.chromium.org/1140723002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@295234 0039d316-1c4b-4281-b951-d872f2087c98

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