[apimachinery] Remove map nil check before delete in mergeMap

[gaurav1086]

Signed-off-by: Gaurav Singh gaurav1086@gmail.com

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:

/kind api-change
/kind bug
/kind cleanup
/kind deprecation
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
Remove nil check for element before delete in map.
Which issue(s) this PR fixes:

Fixes #
N/A
Special notes for your reviewer:
Minor cleanup
Does this PR introduce a user-facing change?:

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

NONE

[k8s-ci-robot]

Hi @gaurav1086. Thanks for your PR.

I'm waiting for a 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.

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[fedebongio]

/assign @jiahuif

[jiahuif]

/ok-to-test

[apelisse]

/lgtm
/approve

[jiahuif]

/lgtm

[jiahuif]

/retest

[jiahuif]

/assign @pwittrock

Would you mind taking a look of this?

[pwittrock]

/lgtm

[pwittrock]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: apelisse, gaurav1086, pwittrock

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