wilco_dtc_supportd: Fix Low-Power Charger notification string

Remove not translated string variable from low power charger
notification.

BUG=b:147843861,b:150880551
TEST=deploy_chrome # Notification displays when power adapter is
connected

Change-Id: I41432e6e357ebfa322997e958b2dc27fcb716057
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2096896
Auto-Submit: Daniel Campello <campello@chromium.org>
Reviewed-by: Oleh Lamzin <lamzin@google.com>
Commit-Queue: Daniel Campello <campello@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748814}

chrome/app/chromeos_strings.grdp

@@ -1170,7 +1170,7 @@
     Low-power charger connected
   </message>
   <message name="IDS_WILCO_LOW_POWER_CHARGER_MESSAGE" desc="The message body of a notification indicating that a low-power USB charger has been connected, short version.">
-    Your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> may not charge while it is turned on.
+    Your Chromebook may not charge while it is turned on.
   </message>
   <message name="IDS_WILCO_NOTIFICATION_LEARN_MORE" desc="Label on button in various Wilco notification.">
     Learn More