diagnostics: Update comment for cros_ec-access

Update the comment now that cros_healthd_helper has been removed.

BUG=chromium:1063929
TEST=None

Cq-Depend: chromium:2115923
Change-Id: I3230d2b24b548a26e99d6fb14e8c91ca28ed595e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2116315
Tested-by: Jesse Schettler <jschettler@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Jesse Schettler <jschettler@chromium.org>

profiles/base/accounts/group/cros_ec-access

diff --git a/profiles/base/accounts/group/cros_ec-access b/profiles/base/accounts/group/cros_ec-access
index 4301ef2..e4809fb 100644
--- a/profiles/base/accounts/group/cros_ec-access
+++ b/profiles/base/accounts/group/cros_ec-access
@@ -1,7 +1,6 @@
 group:cros_ec-access
 gid:416
-# This group is to grant rw access of /dev/cros_ec to runtime_probe,
-# healthd_ec, and power because the runtime_probe and cros_healthd_helper
-# (which is invoked by debugd and runs as healthd_ec) binaries need access for
-# probing information w/o being root.
+# This group is to grant rw access of /dev/cros_ec to runtime_probe, healthd_ec,
+# and power because the binaries they run need access for probing information
+# w/o being root.
 users:runtime_probe,healthd_ec,power