Remove unused possibility to obfuscate pihole.log in debug log

[yubiuser]

What does this PR aim to accomplish?:

Remove the unused obfucate pihole.log function from the debug log

See discussion: #4973

---

By submitting this pull request, I confirm the following:

1. I have read and understood the contributors guide, as well as this entire template. I understand which branch to base my commits and Pull Requests against.
2. I have commented my proposed changes within the code and I have tested my changes.
3. I am willing to help maintain this change if there are issues with it later.
4. It is compatible with the EUPL 1.2 license
5. I have squashed any insignificant commits. (git rebase)

---

• I have read the above and my PR is ready for review. Check this box to confirm

[dschaper]

Looks like the commit wasn't signed. I'd override the branch protection rule but that may cause issues going from dev to master for release.

[yubiuser]

Thanks. I can also re-sing tomorrow. I cherry-picked from the other branch, maybe it got "lost"

[yubiuser]

Signed the commit, needs re-approval.