Added in 1.5

/dehalfop <nick> [nickN...]

Demotes nick from half-operator. (mode #channel -h Nick)

Parameter

<nick> - The nick to demote.
[nickN...] - Additional nicks to demote.

;Demote 3 users.
/dehalfop Nick1 Nick2 Nick3

;Demote 1 user.
/dehalfop Nick1