Unqualify needlessly qualified Elusive Samurai characters

BUR #32031 has been rejected.

create alias ashikaga_takauji_(nige_jouzu_no_wakagimi) -> ashikaga_takauji
create alias houjou_kunitoki_(nige_jouzu_no_wakagimi) -> houjou_kunitoki
create alias houjou_tokiyuki_(nige_jouzu_no_wakagimi) -> houjou_tokiyuki
create alias suwa_yorishige_(nige_jouzu_no_wakagimi) -> suwa_yorishige
create alias tojo_sadamune_(nige_jouzu_no_wakagimi) -> tojo_sadamune

These characters have full names and do not conflict with anything, I see no reason for them to keep qualifiers in the tag. Alternatively can be renames instead of aliases, I guess?

BUR #32032 has been approved by @nonamethanks.

rename matsuhime -> matsuhime_(sengoku_taisen)

Conflicts with matsuhime_(nige_jouzu_no_wakagimi).

Nvm I'm dumb and seems they're real people so that's why these ones are qualified I guess, oops. Should still rename the Matsuhime though.

The bulk update request #32031 (forum #309483) has been rejected by @Astolfo.

The qualifiers should probably still be converted over to the series' shorthand Nigewaka instead of the full title.

The bulk update request #32032 (forum #309484) has been approved by @nonamethanks.