net: Hyper-V: Deletion of an unnecessary check before the function call "vfree"

[SF Markus Elfring]

> This does not apply to the net-next tree, please respin.

Thanks for your reply.

How do you think about to try out the scripts which I published
in March to get more constructive feedback?
Will they run faster for another analysis on current
Linux source files with your test systems (than my computer)?

Regards,
Markus