writer/hlsl: Don't wrap arrays in structures

FXC has trouble dealing with these.
This was originally added to handle returning arrays as structures.
HLSL supports typedefs, which is a much simpiler solution, and doesn't upset FXC.

Bug: tint:848
Bug: tint:904
Change-Id: Ie841c9c454461a885a35c41476fd4d05d3f34cbf
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/56774
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>

src/transform/hlsl.cc

@@ -28,7 +28,6 @@
 #include "src/transform/pad_array_elements.h"
 #include "src/transform/promote_initializers_to_const_var.h"
 #include "src/transform/simplify.h"
-#include "src/transform/wrap_arrays_in_structs.h"
 #include "src/transform/zero_init_workgroup_memory.h"
 
 TINT_INSTANTIATE_TYPEINFO(tint::transform::Hlsl);
@@ -66,7 +65,6 @@ Output Hlsl::Run(const Program* in, const DataMap&) {
   manager.Add<CalculateArrayLength>();
   manager.Add<ExternalTextureTransform>();
   manager.Add<PromoteInitializersToConstVar>();
-  manager.Add<WrapArraysInStructs>();
   manager.Add<PadArrayElements>();
   data.Add<CanonicalizeEntryPointIO::Config>(
       CanonicalizeEntryPointIO::BuiltinStyle::kStructMember);