Allow deleting accounts when user is locked

removeAccountInternal now allows removing account regardless of lock state:
- If user is unlocked, the account is remove from both CE and DE tables
- If user is locked, it will only be removed from DE. syncDeCeAccounts will
  remove account data from CE once the user is unlocked.

Bug: 26279712
Change-Id: I734aa474d3d98a85459c9795def83c5dbaaa2536