fix(jenkins): remove unused dependencies per knip report

[Ayushmore1214]

Hey, I just made a Pull Request!

This PR removes unused dependencies from the jenkins workspace as identified by the knip reports.

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)
• All your commits have a Signed-off-by line in the message. (more info)

[backstage-goalie]

Missing Changesets

The following package(s) are changed by this PR but do not have a changeset:

• @backstage-community/plugin-jenkins-backend
• @backstage-community/plugin-jenkins
• @backstage-community/plugin-scaffolder-backend-module-jenkins

See CONTRIBUTING.md for more information about how to add changesets.

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
app-next	workspaces/jenkins/packages/app-next	none	v0.0.2
app	workspaces/jenkins/packages/app	none	v0.0.7
backend	workspaces/jenkins/packages/backend	none	v0.0.11
@backstage-community/plugin-jenkins-backend	workspaces/jenkins/plugins/jenkins-backend	none	v0.20.0
@backstage-community/plugin-jenkins	workspaces/jenkins/plugins/jenkins	none	v0.25.0
@backstage-community/plugin-scaffolder-backend-module-jenkins	workspaces/jenkins/plugins/scaffolder-backend-module-jenkins	none	v0.14.0

[Ayushmore1214]

@awanlin plz review , and we have to create a changeset for this right , on the way !

[awanlin]

Hi @Ayushmore1214, reviewers get assigned automatically and will get notified, you don't need to ping them when a PR gets created. This just adds noise to their inbox. If you can avoid doing that it would be greatly appreciated 🙏