Remove badge for unused Jenkins build

[kjperry]

This PR is a

• Feature Implementation
• Bug Fix (kinda?)
• Documentation

What this PR does / why we need it:
The badge in the readme is broken. According to #2184, this build hasn't been in use since at least September.

Which issue(s) this PR fixes
Fixes (none)

Please leave this checklist in the PR comment so that maintainers can ensure a good PR.

Merge Checklist:

• New feature
  • Tests
  • Documentation
• SVCat CLI flag
• Server Flag for config
  • Chart changes
  • removing a flag by marking deprecated and hiding to avoid
    breaking the chart release and existing clients who provide a
    flag that will get an error when they try to update

[k8s-ci-robot]

Hi @kjperry. Thanks for your PR.

I'm waiting for a kubernetes-incubator or kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jberkhahn]

/ok-to-test

[jberkhahn]

/retest

[MHBauer]

Thanks @kjperry.
/lgtm

It looks like we have some flakes :-(

[jboyd01]

Thanks @kjperry.
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jboyd01

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• OWNERS [jboyd01]

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