Remove reference to Python 2.7 in install check output
Remove reference to Python 2.7 in install check output

As title.

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