[ios] Remove unused typedef from PasswordsTableViewControllerTest

The type was left over from the export feature cleanup.

Change-Id: I7d50256119f1467a36cafd33d385234f2ea06212
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1845768Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703674}

ios/chrome/browser/ui/settings/password/passwords_table_view_controller_unittest.mm

@@ -44,11 +44,6 @@ using password_manager::MockPasswordStore;
 
 namespace {
 
-typedef struct {
-  bool export_enabled;
-  int section_offset;
-} ExportPasswordsFeatureStatus;
-
 class PasswordsTableViewControllerTest : public ChromeTableViewControllerTest {
  protected:
   PasswordsTableViewControllerTest() = default;