Clean up bytecode patching code
Clean up bytecode patching code

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