mass update steaming_breath -> breath
Both tags are visually indistinguishable. We define breath as "when someone's breath is visible as puffs of steam", so the additional "steaming" descriptor in steaming breath is redundant. The older tag has a wiki and ~100x as many posts.
EDIT: The bulk update request #1422 (forum #140523) has been approved by @NWF_Renim.
Updated by DanbooruBot