See ya, “I Hate My Teenage Daughter” — in the wake of “Idol” scheduling news, “IHMTD” will air this summer. (Beth Dubber)

Once upon a time, the network said it would trim the Wednesday performance episodes of “Idol” to 90 minutes, starting April 4, when there were fewer Idolettes left standing and the network could use the extra 30 minutes to give a plum post-“Idol” push to episodes of  the Fox sitcom “I Hate My Teenage Daughter.”

 But, of course, Fox’s news follows by about one week NBC’s announcement it would begin live two-hour performance nights of its singing competition “The Voice” on Monday, April 2, while expanding the series to a second night with live elimination rounds, beginning Tuesday, April 3.

 Also in the “plus” column for Fox: continuing its two-hour “Idol” episodes on Wednesdays for the rest of the season will most certainly do a bit of no good for ABC’s new comedy series “Don’t Trust the B---- in Apt. 23” which ABC thought was going to debut on April 11 at 9:30 p.m. against lame “Teenage Daughter” competish.

 In its short life, that freshman Fox sitcom — about two mothers who were bullied in school now raising daughters who bully them at home with hilarious results —  has averaged an anemic 5.8 million viewers. It’s been airing on Tuesday nights recently, and this week clocked a measly crowd of 3.6 million.

 In Fox’s new plan, when “Teenage Daughter” leaves Tuesdays in early April, it will head into holding pattern and wait until its remaining episodes can air as part of Fox’s Summer Burnoff Theatre.