Eliminate unnecessary condition when eager loading

This condition is a leftover from a previous implementation based on a
recursive require.

It is now unnecessary because shadowed files get no autoloads.

lib/zeitwerk/loader/eager_load.rb

@@ -171,7 +171,7 @@ def load_file(path)
         next if honour_exclusions && eager_load_exclusions.member?(abspath)
 
         if ruby?(abspath)
-          if (cref = autoloads[abspath]) && !shadowed_file?(abspath)
+          if (cref = autoloads[abspath])
             cget(*cref)
           end
         else