also revert CUDA changes

Author: ChrisRackauckas

ext/LinearSolveCUDAExt.jl

@@ -1,17 +1,14 @@
 module LinearSolveCUDAExt
 
 using CUDA
-using CUDA: CuVector, CuMatrix
 using LinearSolve: LinearSolve, is_cusparse, defaultalg, cudss_loaded, DefaultLinearSolver,
                    DefaultAlgorithmChoice, ALREADY_WARNED_CUDSS, LinearCache,
                    needs_concrete_A,
                    error_no_cudss_lu, init_cacheval, OperatorAssumptions,
                    CudaOffloadFactorization, CudaOffloadLUFactorization, CudaOffloadQRFactorization,
                    CUDAOffload32MixedLUFactorization,
-                   SparspakFactorization, KLUFactorization, UMFPACKFactorization,
-                   LinearVerbosity
+                   SparspakFactorization, KLUFactorization, UMFPACKFactorization
 using LinearSolve.LinearAlgebra, LinearSolve.SciMLBase, LinearSolve.ArrayInterface
-using LinearAlgebra: LU
 using SciMLBase: AbstractSciMLOperator
 
 function LinearSolve.is_cusparse(A::Union{