Remove Kokkos::single from the code base.

[overfelt]

The places where Kokkos::single occure:

mo_chm_diags.hpp:212: Kokkos::single(Kokkos::PerTeam(team),
mo_photo.hpp:179: Kokkos::single(Kokkos::PerTeam(team), = {
mo_photo.hpp:569: Kokkos::single(Kokkos::PerTeam(team), = {
mo_photo.hpp:764: Kokkos::single(Kokkos::PerTeam(team), = {
mo_sethet.hpp:381: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:996: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1192: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1266: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1294: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1361: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1541: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1575: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1637: Kokkos::single(Kokkos::PerTeam(team), = {
wet_dep.hpp:1670: Kokkos::single(Kokkos::PerTeam(team), = {

These should all be removed.