Dequalify Yuki Setsuna

BUR #30433 has been approved by @nonamethanks.

create alias yuki_setsuna_(love_live!) -> yuki_setsuna
remove alias yuki_setsuna_(love_live!) -> yuki_setsuna
rename yuki_setsuna_(afterschool_school_idol)_(love_live!) -> yuki_setsuna_(afterschool_school_idol)
rename yuki_setsuna_(hehe_i'm_glad!)_(love_live!) -> yuki_setsuna_(hehe_i'm_glad!)
rename yuki_setsuna_(scarlet_courage)_(love_live!) -> yuki_setsuna_(scarlet_courage)
rename yuki_setsuna_(the_chariot)_(love_live!) -> yuki_setsuna_(the_chariot)

Similarly to Hoshino Ai (oshi no ko) (forum #300028), Yuki Setsuna (love live!) has a staggering 2321 posts compared to Yuuki Setsuna (aonekokan)'s 3 posts. If the other one goes through, I see no reason for this one not to. These tags are even spelt differently.

Aside from the posts discrepancy again, in this case the tag name was also changed in forum #270782 to match the official romanization. I think that on it's own is also enough reason to dequalify, since it's not ambigous anyway (and the very maybe potentially ambiguous alias would remain qualified).

The bulk update request #30433 (forum #300035) has been approved by @nonamethanks.