Trial Spawner Spawns Ominous Mobs

When defeating an Ominous vault, and after the 30 minutes cooldown ends and a normal trial vault starts, the mobs will still spawn with armor 

Steps to Reproduce:

1. defeat Ominous trial vault waves
2. wait for the trial vault cooldown
3. start a trial vault wave

Observed Results: 
the trial spawner spawns Ominous trial spawner mobs (mobs with armor/more mobs)

Expected Results:
the trial spawner mobs rest back to the normal amount of mobs and without armor or weapons