Ok So infused bag of holding when items are inside it and the next long rest you decide to remove the infusion what happens does the bag's contents pop out or disappear?

That question's going to come down to DM interpretation.  There's no rule specifically citing what happens, so the DM would have to make a call.

In my case, speaking with my DM hat on: the contents disappear, because the bag is no longer tethered to the extradimensional space created by the infusion.  They're released into the Astral Plane same as if the bag was ruptured, and the artificer does not get them back.  As a DM, I would inform the artificer player so infusing that this would happen, and their experience and knowledge with and of the infusion means they know it in-character.  So they could not accidentally Yeetus Deletus their entire inventory, but if for whatever reason they deliberately ended the infusion with stuff in the bag knowing the information I gave them, then that's their own gol-durn fault and their stuff is gone.

Thank you, I think my DM will rule it i was wondering since it's an Magical infused item it could work different to a original.. cool