md settings: Remove level of security indicator on lock screen.

chrome/app/settings_strings.grdp

Index: chrome/app/settings_strings.grdp
diff --git a/chrome/app/settings_strings.grdp b/chrome/app/settings_strings.grdp
index c086f1713dd3ea00837716f9130316e4d9809ad5..51665e35ccc015e360201e1ca531f8744f3c3c74 100644
--- a/chrome/app/settings_strings.grdp
+++ b/chrome/app/settings_strings.grdp
@@ -2340,12 +2340,6 @@
     <message name="IDS_SETTINGS_PEOPLE_ENABLE_SCREENLOCK" desc="The text on the checkbox to enable screenlocker for current user.">
       Show lock screen when waking from sleep
     </message>
-    <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_HIGH_SECURITY" desc="Text on the lock screen which indicates an unlock method is high security.">
-      High security
-    </message>
-    <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_MEDIUM_SECURITY" desc="Text on the lock screen which indicates an unlock method is medium security.">
-      Medium security
-    </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_TITLE" desc="Text on the people page which opens up the quick unlock subpage and the title of the quick unlock subpage.">
       Screen lock
     </message>