Simplify sparse type mappings (#3076)

* Simplify sparse type mappings

* Update lib/cusparse/src/array.jl

Co-authored-by: Guillaume Dalle <22795598+gdalle@users.noreply.github.com>

---------

Co-authored-by: Guillaume Dalle <22795598+gdalle@users.noreply.github.com>

Author: kshyatt

lib/cusparse/src/array.jl

@@ -105,23 +105,15 @@ function CUDACore.unsafe_free!(xs::CuSparseMatrixCSR)
     return
 end
 
-GPUArrays.sparse_array_type(sa::CuSparseMatrixCSC) = CuSparseMatrixCSC
 GPUArrays.sparse_array_type(::Type{<:CuSparseMatrixCSC}) = CuSparseMatrixCSC
-GPUArrays.sparse_array_type(sa::CuSparseMatrixCSR) = CuSparseMatrixCSR
 GPUArrays.sparse_array_type(::Type{<:CuSparseMatrixCSR}) = CuSparseMatrixCSR
-GPUArrays.sparse_array_type(sa::CuSparseVector) = CuSparseVector
 GPUArrays.sparse_array_type(::Type{<:CuSparseVector}) = CuSparseVector
-GPUArrays.dense_array_type(sa::CuSparseVector) = CuArray
 GPUArrays.dense_array_type(::Type{<:CuSparseVector}) = CuArray
-GPUArrays.dense_array_type(sa::CuSparseMatrixCSC) = CuArray
 GPUArrays.dense_array_type(::Type{<:CuSparseMatrixCSC}) = CuArray
-GPUArrays.dense_array_type(sa::CuSparseMatrixCSR) = CuArray
 GPUArrays.dense_array_type(::Type{<:CuSparseMatrixCSR}) = CuArray
 
-GPUArrays.csc_type(sa::CuSparseMatrixCSR) = CuSparseMatrixCSC
-GPUArrays.csr_type(sa::CuSparseMatrixCSC) = CuSparseMatrixCSR
-GPUArrays.coo_type(sa::Union{CuSparseMatrixCSR, Transpose{<:Any,<:CuSparseMatrixCSR}, Adjoint{<:Any,<:CuSparseMatrixCSR}}) = CuSparseMatrixCOO
-GPUArrays.coo_type(sa::Union{CuSparseMatrixCSC, Transpose{<:Any,<:CuSparseMatrixCSC}, Adjoint{<:Any,<:CuSparseMatrixCSC}}) = CuSparseMatrixCOO
+GPUArrays.csc_type(::Type{<:CuSparseMatrixCSR}) = CuSparseMatrixCSC
+GPUArrays.csr_type(::Type{<:CuSparseMatrixCSC}) = CuSparseMatrixCSR
 GPUArrays.coo_type(::Type{T}) where {T<:Union{CuSparseMatrixCSR, Transpose{<:Any,<:CuSparseMatrixCSR}, Adjoint{<:Any,<:CuSparseMatrixCSR}}} = CuSparseMatrixCOO
 GPUArrays.coo_type(::Type{T}) where {T<:Union{CuSparseMatrixCSC, Transpose{<:Any,<:CuSparseMatrixCSC}, Adjoint{<:Any,<:CuSparseMatrixCSC}}} = CuSparseMatrixCOO