Remove old CG API from stubs
Remove old CG API from stubs

cpcloud/numba,stuartarchibald/numba,seibert/numba,seibert/numba,IntelLabs/numba,cpcloud/numba,numba/numba,numba/numba,stonebig/numba,stuartarchibald/numba,IntelLabs/numba,seibert/numba,gmarkall/numba,seibert/numba,IntelLabs/numba,gmarkall/numba,cpcloud/numba,numba/numba,stuartarchibald/numba,cpcloud/numba,numba/numba,gmarkall/numba,gmarkall/numba,stuartarchibald/numba,stonebig/numba,numba/numba,IntelLabs/numba,IntelLabs/numba,seibert/numba,stonebig/numba,stonebig/numba,stonebig/numba,stuartarchibald/numba,cpcloud/numba,gmarkall/numba