Every Jewish baby boy needs to get a Bris - irrelevant of his future as a religiously observant Jew.
If the parents don't take care of it, then the local Bet Din has to deal with it.
If they didn't, then the kid has to do it when he grows up.
Where do you find that it is not ok for an Orthodox rabbi to perform Brit Milah on someone who isn't going to be Orthodox?
To address your specific question, the Kitzur Shulchan Aruch says in 163:1 סימן קסג הלכות מילה:
מִצְוַת עֲשֵׂה עַל הָאָב לָמוּל אֶת בְּנוֹ
It's a positive commandment for a father to circumcise his son.
No caveats, unless the baby isn't perfectly healthy.