remove defunct comment

Author: rickeylev

tests/py_zipapp/BUILD.bazel

@@ -5,9 +5,6 @@ load("//python:py_test.bzl", "py_test")
 load("//python/private:bzlmod_enabled.bzl", "BZLMOD_ENABLED")  # buildifier: disable=bzl-visibility
 load("//python/zipapp:py_zipapp_binary.bzl", "py_zipapp_binary")
 load("//tests/support:support.bzl", "NOT_WINDOWS")
-# todo: add windows support. Windows support will be a bit odd.
-# It previously worked by having special logic in the exe launcher
-# that knew to look for .zip and running that through python
 
 py_binary(
     name = "venv_bin",