Simplify get_readonly_buffer
Simplify get_readonly_buffer

The logic here had no effect.

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