Revert "Update icons and text for guest user"

Revert submission 13278947-new-guest-user-strings

Reason for revert: Use same strings and text as Android R
Reverted Changes:
I8e9b7992d:Update icons and text for guest user
I42c0b46fd:Update icons and text for guest user

Bug: 169783558
Change-Id: Id038ec708e9098c856c4d24ae55a3b7e2bad391d
4 files changed