InstantExtended: remove dead code related to the non-cacheable NTP.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 322117365eb75597dbbc6a24c1b1be55ed2e4828..bebc67aaaeb0ce58bd08c3ee149c7e1a02afe5d5 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -3649,9 +3649,6 @@ Make sure you do not expose any sensitive information.
       <message name="IDS_TASK_MANAGER_NOTIFICATION_PREFIX" desc="The prefix for a Desktop Notification in the Task Manager">
         Notification: <ph name="NOTIFICATION_NAME">$1<ex>http://www.domain.com</ex></ph>
       </message>
-      <message name="IDS_TASK_MANAGER_INSTANT_OVERLAY_PREFIX" desc="The prefix for an Instant overlay in the Task Manager">
-        Instant: <ph name="INSTANT_OVERLAY_NAME">$1<ex>http://www.google.com/</ex></ph>
-      </message>
       <message name="IDS_TASK_MANAGER_WEBVIEW_TAG_PREFIX" desc="The prefix for a guest page loaded in webview tag in the Task Manager">
         Webview: <ph name="WEBVIEW_TAG_NAME">$1<ex>Google</ex></ph>
       </message>