Fix nightly (and non-nightly) release Task and Pipeline 👼

[vdemeester]

Changes

We forgot to remove some resource related to GsUtil and NopImage in
the release and release-nightly tasks and pipelines — making the
nightly release failing 😅

Signed-off-by: Vincent Demeester vdemeest@redhat.com

/cc @imjasonh @sbwsg @bobcatfish

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes tests (if functionality changed/added)
• Includes docs (if user facing)
• Commit messages follow commit message best practices

See the contribution guide for more details.

Double check this list of stuff that's easy to miss:

• If you are adding a new binary/image to the cmd dir, please update
  the release Task to build and release this image.

Reviewer Notes

If API changes are included, additive changes must be approved by at least two OWNERS and backwards incompatible changes must be approved by more than 50% of the OWNERS, and they must first be added in a backwards compatible way.

Release Notes

Describe any user facing changes here, or delete this block.

Examples of user facing changes:
- API changes
- Bug fixes
- Any changes in behavior

[imjasonh]

/lgtm
/approve

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ImJasonH

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• OWNERS [ImJasonH]

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[vdemeester]

/test pull-tekton-pipeline-integration-tests