Tpetra: Deprecate ArrayRCP version of getLocalDiagOffsets from BlockCrsMatrix
Created by: mhoemmen
@trilinos/tpetra
BlockCrsMatrix::getLocalDiagCopy (which uses the output of getLocalDiagOffsets) takes the offsets in as Kokkos::View, not Teuchos::ArrayRCP. Thus, we don't need the latter version of getLocalDiagOffsets, so we can deprecate it.