Remove environment variable in remove-node play

[sdd1798]

What type of PR is this?
/kind bug

What this PR does / why we need it:
This PR fixes following error
"The error was: 'proxy_disable_env' is undefined\n" in remove-node.yaml

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

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[sdd1798]

I signed it

[oomichi]

Please update the title based on current change and squash current 2 commits into a single commit to avoid confusion.

[floryut]

/ok-to-test
Please check again CLA with email acc use in commit

[floryut]

@sdd1798 Do you have time to handle the fixup ? (and cla check)

[oomichi]

Please check your email addresses are the same on both commit author and CLA registered one.

/lgtm

[floryut]

Please check your email addresses are the same on both commit author and CLA registered one.

/lgtm

We may wait a bit but I guess we won't have any other choice than cloning the PR.

[sdd1798]

I signed it

[sdd1798]

@floryut @oomichi Updated the PR

[floryut]

@floryut @oomichi Updated the PR

Thanks but you need to rebase master 😄

[sdd1798]

Oops! Missed it. Now done! @floryut

[floryut]

/lgtm
Great thanks @sdd1798 !

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: floryut, sdd1798

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