Fire Emblem Musou -> Fire Emblem Warriors

BUR #3456 has been approved by @evazion.

remove alias fire_emblem_warriors -> fire_emblem_musou

Pretty much the same reason as in topic #17359.
First unalias, then alias the other way around.

EDIT: The bulk update request #3456 (forum #172802) has been approved by @evazion.

It decided back then to leave them be under forum #158144's advice, but now i think it would be better to change the name of gen'ei_ibunroku_sharp_fe too.

The bulk update request #3456 (forum #172802) has been approved by @evazion.

BUR #3463 has been approved by @evazion.

create alias fire_emblem_musou -> fire_emblem_warriors

Reverse alias.

EDIT: The bulk update request #3463 (forum #172848) has been approved by @evazion.

The bulk update request #3463 (forum #172848) has been approved by @evazion.