Update test/runtests.jl

Co-authored-by: Dominique <dominique.orban@gmail.com>

test/runtests.jl

@@ -19,6 +19,5 @@ include("test_solve_shifted_system.jl")
 include("gpu/test_S_kwarg.jl")
 include("gpu/jlarrays.jl")
 if Sys.isapple() && occursin("arm64", Sys.MACHINE)
-    using Metal
     include("gpu/metal.jl")
 end