tag @s remove mt.small
attribute @s minecraft:scale modifier remove mt.small
attribute @s minecraft:movement_speed modifier remove mt.small
attribute @s minecraft:gravity modifier remove mt.small
attribute @s minecraft:jump_strength modifier remove mt.small
attribute @s minecraft:fall_damage_multiplier modifier remove mt.small
attribute @s minecraft:block_interaction_range modifier remove mt.small
attribute @s minecraft:entity_interaction_range modifier remove mt.small

scoreboard players set @s mt.small 0