cros: Remove supervised user methods from SystemTrayDelegate

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Chrome OS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 2044 matching lines @@
   </message>
   <message name="IDS_CREATE_SUPERVISED_USER_CREATION_AUTH_PROGRESS_MESSAGE" desc="Text shown next to progress indicator upon manager authentication.">
     Authenticating
   </message>
   <message name="IDS_CREATE_SUPERVISED_USER_CREATION_CREATION_PROGRESS_MESSAGE" desc="Text shown next to progress indicator upon supervised user creation.">
     Creating supervised user
   </message>
   <message name="IDS_CREATE_SUPERVISED_USER_CREATION_CREATION_TIMEOUT_MESSAGE" desc="Text shown at the place of progess indicator if creation takes too long and should be cancelled.">
     This is taking much longer than usual. You can keep waiting, or cancel and try again later.
   </message>
-  <message name="IDS_USER_IS_SUPERVISED_BY_NOTICE" desc="Text for notifications showing that this user is supervised">
-    Usage and history of this user can be reviewed by the manager (<ph name="MANAGER_EMAIL">$1<ex>user@example.com</ex></ph>) on chrome.com.
-  </message>
-  <message name="IDS_CHILD_USER_IS_MANAGED_BY_ONE_PARENT_NOTICE" desc="Text for notifications showing that this child user is managed by parent's account.">
-    This is an account for kids managed by <ph name="MANAGER_EMAIL">$1<ex>user@example.com</ex></ph>
-  </message>
-  <message name="IDS_CHILD_USER_IS_MANAGED_BY_TWO_PARENTS_NOTICE" desc="Text for notifications showing that this child user is managed by two parents' accounts.">
-    This is an account for kids managed by <ph name="FIRST_PARENT_EMAIL">$1<ex>first@example.com</ex></ph> and <ph name="SECOND_PARENT_EMAIL">$2<ex>second@example.com</ex></ph>
-  </message>
   <message name="IDS_SUPERVISED_USER_EXPIRED_TOKEN_WARNING" desc="Warning text that is shown on login screen trying to sign in as a supervised user that has expired token">
     This supervised user may have been deleted or disabled by the manager. Please contact the manager if you would like to continue signing in as this user.
   </message>
   <message name="IDS_SUPERVISED_USER_IMPORT_USER_EXIST" desc="In list of supervised users eligible for import, this text indicates that user already is already imported on device.">
     <ph name="USER_DISPLAY_NAME">$1<ex>John</ex></ph> (already on this device)
   </message>
   <message name="IDS_SUPERVISED_USER_IMPORT_USERNAME_EXIST" desc="In list of supervised users eligible for import, this text indicates that another supervised user with same name already exists on device.">
     <ph name="USER_DISPLAY_NAME">$1<ex>John</ex></ph> (name used on this device)
   </message>
   <message name="IDS_SUPERVISED_USER_IMPORT_BUBBLE_TEXT" desc="Text shown in notification bubble when user enters name of user that can be imported.">
@@ skipping 4623 matching lines @@
     Attempts left: $1
   </message>
   <message name="IDS_REQUEST_PIN_DIALOG_PIN" desc="The Provider Identification Number abbreviation">
     PIN
   </message>
   <message name="IDS_REQUEST_PIN_DIALOG_PUK" desc="The Personal Unlocking Key (as used in mobile phones) abbreviation">
     PUK
   </message>
 
 </grit-part>