Fix flake8 issue on master
Fix flake8 issue on master

As title.

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