Loki: Remove log forwarding in logback config

[arklian]

Promtail automatically collects logs in k8s, so we no longer need Loki log forwarding.

Description of changes

Checklist before review

• I have done a thorough self-review of the PR
• Copilot has reviewed my latest changes, and all comments have been fixed and/or closed.
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[sonarqubecloud]

Quality Gate passed for 'codebloom_frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Arshadul-Monir]

The PR title must begin with the notion ticket Id