tests: remove unused file

Introduced by 95fd63b1.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

tests/qemuxml2argvdata/qemuxml2argv-channel-reconnect.args

-LC_ALL=C \
-PATH=/bin \
-HOME=/home/test \
-USER=test \
-LOGNAME=test \
-QEMU_AUDIO_DRV=none \
-/usr/bin/qemu-system-i686 \
--name QEMUGuest1 \
--S \
--M pc \
--m 214 \
--smp 1,sockets=1,cores=1,threads=1 \
--uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
--nographic \
--nodefconfig \
--nodefaults \
--chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
-server,nowait \
--mon chardev=charmonitor,id=monitor,mode=readline \
--no-acpi \
--boot c \
--device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa \
--device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x3 \
--usb \
--chardev socket,id=charchannel0,host=localhost,port=1234,reconnect=10 \
--device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,\
-id=channel0,name=asdf \
--chardev socket,id=charchannel1,path=/tmp/channel/domain--1-QEMUGuest1/fdsa,\
-server,nowait,reconnect=10 \
--device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,\
-id=channel1,name=fdsa