Remove use of Kokkos macro aliases

[sslattery]

We are in the process of deprecating the macros in Cabana_Macros.hpp with the goal of that file eventually being removed. This PR removes the use of those macros in the library implementation.

[codecov-io]

Codecov Report

Merging #58 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master     #58   +/-   ##
======================================
  Coverage    97.8%   97.8%           
======================================
  Files          15      15           
  Lines         731     731           
======================================
  Hits          715     715           
  Misses         16      16

Impacted Files	Coverage Δ
core/src/Cabana_Slice.hpp	100% <ø> (ø)	⬆️
core/src/Cabana_VerletList.hpp	99.1% <ø> (ø)	⬆️
core/src/Cabana_ExecutionPolicy.hpp	100% <ø> (ø)	⬆️
core/src/Cabana_Sort.hpp	100% <ø> (ø)	⬆️
core/src/Cabana_AoSoA.hpp	100% <ø> (ø)	⬆️
core/src/Cabana_SoA.hpp	100% <ø> (ø)	⬆️
core/src/Cabana_LinkedCellList.hpp	100% <ø> (ø)	⬆️

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