Removal of drywall on concrete wall

Remodeling bathroom and I took off tiles off one of the walls and found there was drywall underneath. So I said, "ok" let me take off the drywall...

Found that it the drywall was apparently "glued" to the cement block wall.

I want to take the drywall out but I've been chipping away at it and it is getting to be a real pain.

Can I hang cement board (trying to eventually tile the wall) over this drywall which is over a cement block wall or do I keep on chipping away?!

Or can I slap some cement on this wall (over the drywall), try to even it out and then tile and call it a day!?

Any help will be great!

 

Sorry,

Wrong forum.

Pls delete.