feat: Drop Env Vars for v1

[rschalo]

Fixes #N/A

Description
This change drops references for ENV VARs that will no longer be used in with the v1 launch.

How was this change tested?
Make test

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[k8s-ci-robot]

Hi @rschalo. Thanks for your PR.

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[coveralls]

Pull Request Test Coverage Report for Build 10084118684

Details

• 15 of 16 (93.75%) changed or added relevant lines in 3 files are covered.
• 11 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.1%) to 78.029%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/operator/operator.go	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/test/expectations/expectations.go	2	94.64%
pkg/controllers/node/termination/controller.go	2	62.4%
pkg/controllers/provisioning/scheduling/preferences.go	7	86.67%

Totals
Change from base Build 10083695376:	-0.1%
Covered Lines:	8822
Relevant Lines:	11306

---

💛 - Coveralls

[jonathan-innis]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jonathan-innis, rschalo

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