scheduler: cleanup the unused event types about Service

[SataQiu]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

scheduler: cleanup the unused event types about Service (followup #105588).
The ServiceAffinity plugin was removed by #105588 since v1.23, and the related Service event types can be safely
removed now.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

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

[k8s-ci-robot]

@SataQiu: This issue is currently awaiting triage.

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[SataQiu]

/assign @Huang-Wei

[Huang-Wei]

/lgtm
/approve

Thanks.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Huang-Wei, SataQiu

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