Title: netextreme_psu_in: fixed wrong voltage usage handling
Level: 1
Component: checks
Class: fix
Compatible: compat
State: unknown
Version: 1.2.8b1
Date: 1447335434

This value is not the current voltage usage,
but rather the PSU type defined in EXTREME-SYSTEM-MIB:
v110 (1), v220 (2), v48DC (3), unknown(4)
Thus we do not monitor this value any more.
