Remove stale TODO

Remove a stale TODO. The Chrome OS sign-in Profile is now always using
the built-in certificate verifier, so there's no explitily enabled it
for certain policy values.

Bug: 972044
Test: none
Change-Id: Id4d7a2233557d4adb131199bdeb548ad43a02f42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808862Reviewed-by: Matt Mueller <mattm@chromium.org>
Commit-Queue: Pavol Marko <pmarko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697349}

chrome/browser/net/profile_network_context_service.cc

@@ -147,9 +147,6 @@ bool ShouldUseBuiltinCertVerifier(Profile* profile) {
   if (builtin_cert_verifier_enabled_pref->IsManaged())
     return builtin_cert_verifier_enabled_pref->GetValue()->GetBool();
 
-  // TODO(https://crbug.com/939344): Also evaluate whether there are
-  // extension-specific certificates to be used, and if yes, enable the built-in
-  // cert verifier.
   return base::FeatureList::IsEnabled(
       net::features::kCertVerifierBuiltinFeature);
 }