Remove importlib metadata (backport #932)

[mergify]

Description

Not needed

Fixes # (issue)

Is this user-facing behavior change?

Did you use Generative AI?

Additional Information

---

This is an automatic backport of pull request #932 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of fb897f9 has failed:

On branch mergify/bp/kilted/pr-932
Your branch is up to date with 'origin/kilted'.

You are currently cherry-picking commit fb897f9.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   launch/launch/frontend/parser.py
	modified:   launch/test/launch/frontend/test_parser.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   launch/package.xml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[ahcorde]

Pulls: #934
Gist: https://gist.githubusercontent.com/ahcorde/9d97481b4fafb8167371cc0e4ef41795/raw/bcdac5723f86dfeea56d60af10b6969610b8281c/ros2.repos
BUILD args: --packages-above-and-dependencies launch
TEST args: --packages-above launch
ROS Distro: kilted
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/17627

• Linux
• Linux-aarch64
• Linux-rhel
• Windows

[ahcorde]

• Linux
• Linux-aarch64
• Linux-rhel
• Windows