[EasyUnlock] Remove "All set!" notification strings.

BUG=409443
TEST=Set up Easy Unlock.  Once finished, there shouldn't be an "All set!" notification shown.
R=tengs@chromium.org

Review URL: https://codereview.chromium.org/537823002

Cr-Commit-Position: refs/heads/master@{#297063}

chrome/app/generated_resources.grd

@@ -14597,13 +14597,6 @@ Do you accept?
     <message name="IDS_EASY_UNLOCK_SETUP_NOTIFICATION_BUTTON_TITLE" desc="The text to show on the button in the notification inviting the user to use the Easy Unlock feature.">
       1-minute setup
     </message>
-    <!-- Strings for the Easy Unlock success notification -->
-    <message name="IDS_EASY_UNLOCK_SUCCESS_NOTIFICATION_TITLE" desc="Title for the notification informing the user that Easy Unlock has been successfully set up.">
-      All set!
-    </message>
-    <message name="IDS_EASY_UNLOCK_SUCCESS_NOTIFICATION_MESSAGE" desc="The body text for the notification informing the user that Easy Unlock has been successfully set up.">
-      You can unlock this <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> when you and your Android phone are nearby.
-    </message>
     <!-- Strings for notification shown when the Chromebook is added to Easy Unlock -->
     <message name="IDS_EASY_UNLOCK_CHROMEBOOK_ADDED_NOTIFICATION_TITLE" desc="Title for notification shown when this Chromebook is added to Easy Unlock as an additional Easy Unlock device.">
       Easy unlock is now enabled

chrome/browser/extensions/api/easy_unlock_private/easy_unlock_private_api.cc

@@ -129,15 +129,6 @@ bool EasyUnlockPrivateGetStringsFunction::RunSync() {
       l10n_util::GetStringUTF16(
           IDS_EASY_UNLOCK_SETUP_NOTIFICATION_BUTTON_TITLE));
 
-  // Success notification strings.
-  strings->SetString(
-      "successNotificationTitle",
-      l10n_util::GetStringUTF16(IDS_EASY_UNLOCK_SUCCESS_NOTIFICATION_TITLE));
-  strings->SetString(
-      "successNotificationMessage",
-      l10n_util::GetStringFUTF16(IDS_EASY_UNLOCK_SUCCESS_NOTIFICATION_MESSAGE,
-                                 device_type));
-
   // Chromebook added to Easy Unlock notification strings.
   strings->SetString(
       "chromebookAddedNotificationTitle",