chore: remove duplicated workflow files

[gvatsal60]

Remove dependabot-pr.yaml and pre-commit-pr.yaml.
These workflows are now centralized in the .github organization repository.

[sonarqubecloud]

Quality Gate passed

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

[Copilot]

Pull request overview

Removes repository-local GitHub Actions workflows that auto-approve/auto-merge Dependabot and pre-commit-ci PRs, based on the note that these workflows are now managed centrally in the organization-level .github repository.

Changes:

• Delete the pre-commit-pr.yaml workflow that approves/auto-merges PRs created by pre-commit-ci[bot].
• Delete the dependabot-pr.yaml workflow that approves/auto-merges PRs created by dependabot[bot].

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/pre-commit-pr.yaml	Removed duplicated pre-commit bot auto-approve/merge workflow.
.github/workflows/dependabot-pr.yaml	Removed duplicated Dependabot auto-approve/merge workflow.

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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