[oe] Python-native dependency in libxml2

[Ahsan, Noor]

Hello,

I was looking at the libxml2 package. While going through the recipes I
came to know that its native package depends on python-native package as
well. This dependency is defined in libxml2.inc file. 

DEPENDS_virtclass-native = "python-native"

This package build fine after removing this dependency. I am not clear
why this dependency is being added in libxml2 package. Can somebody
clear that to me. While looking at the git log I came to know that this
change is coming from libxml2-native.inc file. But I am not clear why
this dependency was added as this package build fine without it.

Please help me in understanding this dependency. Thanks.

Regards,
Noor