scripts/remote: make clean leftovers

[Yegor Yefremov]

After performing make distclean I've discovered following files being removed:

Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        deleted:    scripts/remote/__init__.py
        deleted:    scripts/serial/tools/__init__.py
        deleted:    scripts/serial/urlhandler/__init__.py

What should actually happen to these files?

Yegor