Remove Persian from link underlining removal

There was a discussion [1] on this on Persian Wikipedia and users
don't want it actually. It is such an UI inconsistency and detecting
links based on their color is hard. It may have problem on Amiri font
but not on System default font and Persian Wikipedia fonts.

[1] https://fa.wikipedia.org/wiki/MediaWiki:Common.css?oldid=10552148

Change-Id: I8168baff1b9e64d0c79dcd7a896b9cbeeed0b266
Merge "Remove Persian from link underlining removal"