Remove all remaining PDFium infrastructure for V8 natives.

Bug: v8:7624
Change-Id: I59a1da39c876a38294e78ae87e012f537ec6c04f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/61290
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/testing/v8_initializer.cpp b/testing/v8_initializer.cpp
index b484ee4..8564b2e 100644
--- a/testing/v8_initializer.cpp
+++ b/testing/v8_initializer.cpp
@@ -78,13 +78,9 @@
 std::unique_ptr<v8::Platform> InitializeV8ForPDFiumWithStartupData(
     const std::string& exe_path,
     const std::string& bin_dir,
-    v8::StartupData* natives_blob,
     v8::StartupData* snapshot_blob) {
-  // TODO(v8:7624): Remove natives and all remaining infrastructure.
   std::unique_ptr<v8::Platform> platform = InitializeV8Common(exe_path);
-  if (natives_blob && snapshot_blob) {
-    if (!GetExternalData(exe_path, bin_dir, "natives_blob.bin", natives_blob))
-      return nullptr;
+  if (snapshot_blob) {
     if (!GetExternalData(exe_path, bin_dir, "snapshot_blob.bin", snapshot_blob))
       return nullptr;
     v8::V8::SetSnapshotDataBlob(snapshot_blob);