cleanup: remove unused parameter to ImportResolver

Bug: n/a
Test: m
Change-Id: Iae43b898de102082c97e77ad65cd2b2dddb70fb5
diff --git a/import_resolver.h b/import_resolver.h
index e52843e..c732165 100644
--- a/import_resolver.h
+++ b/import_resolver.h
@@ -28,8 +28,7 @@
 class ImportResolver {
  public:
   ImportResolver(const IoDelegate& io_delegate, const std::string& input_file_name,
-                 const std::set<std::string>& import_paths,
-                 const std::vector<std::string>& input_files);
+                 const std::set<std::string>& import_paths);
   virtual ~ImportResolver() = default;
 
   // non-copyable, non-movable