nmcli pollutes terse output with unrequested information

[Jonathan Cave]

For example on my system with a wifi device named wlp2s0, run the following command which should just print out the three requested fields:

$ nmcli -t -f SSID,CHAN,FREQ d wifi list ifname wlp2s0
wlp2s0
Canonical:1:2412 MHz
Canonical:6:2437 MHz
Canonical:11:2462 MHz
Canonical:40:5200 MHz
Canonical:36:5180 MHz
...

The first line of output is the interface name and should not be included.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: network-manager 1.4.4-1ubuntu3.2
ProcVersionSignature: Ubuntu 4.10.0-32.36-generic 4.10.17
Uname: Linux 4.10.0-32-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Fri Oct 13 10:17:13 2017
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2017-04-18 (177 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
IpRoute:
 default via 10.20.64.1 dev enxa0cec802a800 proto static metric 100
 10.20.64.0/21 dev enxa0cec802a800 proto kernel scope link src 10.20.66.44 metric 100
 10.111.44.0/24 dev lxdbr0 proto kernel scope link src 10.111.44.1
 169.254.0.0/16 dev enxa0cec802a800 scope link metric 1000
NetworkManager.conf:
 [main]
 plugins=ifupdown,keyfile

 [ifupdown]
 managed=false
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 lxdbr0 bridge connected /org/freedesktop/NetworkManager/Devices/3 lxdbr0 6e757793-2287-4147-8426-7585435bbe4e /org/freedesktop/NetworkManager/ActiveConnection/1
 enxa0cec802a800 ethernet connected /org/freedesktop/NetworkManager/Devices/5 Wired connection 1 d7f88012-4a23-3692-bbf2-64f2c5854f29 /org/freedesktop/NetworkManager/ActiveConnection/9
 wlp2s0 wifi disconnected /org/freedesktop/NetworkManager/Devices/1 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- --
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.4.4 connected started full enabled enabled enabled enabled enabled