chore: cleanup code

[zdtsw]

Description

• no need to add ingresscontroller into runtime again
• it has been handled in main.go

  opendatahub-operator/main.go

  Line 101 in fde5d69

  utilruntime.Must(operatorv1.Install(scheme))

How Has This Been Tested?

Screenshot or short clip

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• Pull Request contains a description of the solution, a link to the JIRA issue, and to any dependent or related Pull Request.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ykaliuta

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[zdtsw]

/test opendatahub-operator-e2e