oeqq/runtime/ethernet_ip_connman: remove test_set_virtual_ip reference

oeqq/runtime/ethernet_ip_connman: remove test_set_virtual_ip reference

It was removed. Fixes test loading after testexport.bbclass
has exported the tests:

oeqa.core.exception.OEQADependency: TestCase ethernet_ip_connman.Ethernet_Test.test_get_ip_from_dhcp depends on ethe
rnet_ip_connman.Ethernet_Test.test_set_virtual_ip and isn't available, cases available odict_keys(['apt.AptRepoTest.
test_apt_install_from_repo', 'boot.BootTest.test_reboot', 'buildcpio.BuildCpioTest.test_cpio', ...

Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>