Reland https://codereview.chromium.org/823313002/: Remove the TSan-related code from the scripts in tools/valgrind

In addition, references to tsan_analyze.py have been removed from browser_tester.py

BUG=351259
[email protected],[email protected]
NOTRY=true

Review URL: https://codereview.chromium.org/833613002

Cr-Commit-Position: refs/heads/master@{#309755}
9 files changed