[cleanup] [presubmit] Remove left-over comment

This comment was left over in
https://codereview.chromium.org/2601043002.

R=machenbach@chromium.org
NOTRY=true

Bug: v8:6921
Change-Id: I5182fc624129948172ce436dc9b04c6fcd299d18
Reviewed-on: https://chromium-review.googlesource.com/720924Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48586}

tools/presubmit.py

@@ -55,7 +55,6 @@ from testrunner.local import utils
 # build/include_what_you_use: Started giving false positives for variables
 #   named "string" and "map" assuming that you needed to include STL headers.
 # TODO(bmeurer): Fix and re-enable readability/check
-# http://crrev.com/2199323003 relands.
 
 LINT_RULES = """
 -build/header_guard