There is no need to remove the bearing wall footing unless it somehow is too high. It’s a common practice for the basement slab to be poured so it rests directly on top of the footings.

ACI 117 then provides section 3.5—Deviation from cross-sectional dimension of foundation, in which the effective width of the footing or foundation is given a tolerance. Those are: Formed ...

Footing width can vary according to the structure, site, and conditions. Under code, generally, one-story buildings with footings on undisturbed soil with LBVs between 1,500 and 4,000 should have ...