Update message on DISALLOW_REMOVE_USERS constant.
Update message on DISALLOW_REMOVE_USERS constant.

Change-Id: I4f873eba4082278553ded830bb902fb3a3195d87

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base