[wasm-gc] Remove obsolete function handling from ToJS wrapper code

Bug: v8:7748
Change-Id: I90c24cbddee7744fba779a0c25f5e4dd860137a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3823125
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82338}

src/compiler/wasm-compiler.cc

@@ -6325,25 +6325,15 @@ class WasmWrapperGraphBuilder : public WasmGraphBuilder {
             // Smis.
             // TODO(7748): Update this when JS interop is settled.
             auto wrap = gasm_->MakeLabel();
-            auto function = gasm_->MakeLabel();
             auto done = gasm_->MakeLabel(MachineRepresentation::kTaggedPointer);
             gasm_->GotoIf(IsSmi(node), &done, node);
             gasm_->GotoIf(gasm_->IsDataRefMap(gasm_->LoadMap(node)), &wrap);
-            gasm_->GotoIf(
-                gasm_->HasInstanceType(node, WASM_INTERNAL_FUNCTION_TYPE),
-                &function);
             // This includes the case where {node == null}.
             gasm_->Goto(&done, node);
 
             gasm_->Bind(&wrap);
             gasm_->Goto(&done, BuildAllocateObjectWrapper(node, context));
 
-            gasm_->Bind(&function);
-            gasm_->Goto(&done, gasm_->LoadFromObject(
-                                   MachineType::TaggedPointer(), node,
-                                   wasm::ObjectAccess::ToTagged(
-                                       WasmInternalFunction::kExternalOffset)));
-
             gasm_->Bind(&done);
             return done.PhiAt(0);
           }