re-enable OpenMP in wheels
re-enable OpenMP in wheels

Fixes #3400 - now that `patchelf` is working again we can go ahead and
re-enable OpenMP in the wheel build.

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