virt: Remove some filters from v2v/cfg/tests.cfg

These filters will make './run -t v2v --list-tests'
cannot get all test cases in v2v, so remove them.

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
Merge pull request #1742 from liyangfnst/v2v

virt: Remove some filters from v2v/cfg/tests.cfg