Tang Chen 0ee5527fa5 Trivial clean up: do not use plural form in command arguments.
It is a general rule that we don't use plural form for the name of
command arguments. But class DeleteServer() is still using "servers".
So use "server instead".

Change-Id: I2d76de14ec34b88547b9f728b41e9bd93b2a22c5
2015-10-24 11:44:40 +08:00
..
2014-01-20 17:28:13 +04:00