Revert "Wi-Fi Sync: Add strings for feature announcement notification."

This reverts commit 9398a65f.

Reason for revert: no longer needed

Original change's description:
> Wi-Fi Sync: Add strings for feature announcement notification.
> 
> Adding strings separately from implementation to give more time for
> translation.
> 
> Bug: 966270
> Change-Id: I110e960a802d5020c42ed7b65993399cef158bf9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2243585
> Commit-Queue: Jon Mann <jonmann@chromium.org>
> Reviewed-by: James Vecore <vecore@google.com>
> Cr-Commit-Position: refs/heads/master@{#777992}

TBR=jonmann@chromium.org,vecore@google.com

Change-Id: I3aab30f8731c1f1cada280e2b7482a1dab38f9d9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 966270
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2244043Reviewed-by: Jon Mann <jonmann@chromium.org>
Commit-Queue: Jon Mann <jonmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#778001}

ash/ash_strings.grd

@@ -459,12 +459,6 @@ This file contains the strings for ash.
       <message name="IDS_GESTURE_NOTIFICATION_MESSAGE_LEARN_MORE" desc="The body of the notification to show off new gestures. This notification body links to the help page for the gestures.">
         Use gestures to quickly switch between apps and interact with your Chromebook in tablet mode.
       </message>
-      <message name="IDS_WIFI_SYNC_NOTIFICATION_TITLE" desc="The title of the notification to announce that Wi-Fi networks can now be synced between devices.">
-        Wi-Fi network syncing
-      </message>
-      <message name="IDS_WIFI_SYNC_NOTIFICATION_BODY" desc="The body of the notification to announce that Wi-Fi networks can now be synced between devices.">
-        Your networks will now stay in sync across devices. Tap to learn more.
-      </message>
       <message name="IDS_UPDATE_NOTIFICATION_MESSAGE_LEARN_MORE" desc="The body of the notification to notify that the user should restart to get system updates. This notification body links to the info page on the update.">
         Learn more about the latest <ph name="SYSTEM_APP_NAME">$1<ex>Chromium OS</ex></ph> update
       </message>

ash/ash_strings_grd/IDS_WIFI_SYNC_NOTIFICATION_BODY.png.sha1

-7e6a4dcb550ad927bb84aaef20d8d98ab5ac4ec2
\ No newline at end of file

ash/ash_strings_grd/IDS_WIFI_SYNC_NOTIFICATION_TITLE.png.sha1

-7e6a4dcb550ad927bb84aaef20d8d98ab5ac4ec2
\ No newline at end of file