Revert 'Increase memory limit of kserve-controller pod'

[hdefazio]

What this PR does / why we need it:
Reverts #261 which was a temporary fix until kserve#3469 landed

Type of changes
Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Feature/Issue validation/testing:

Please describe the tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced.
Please also list any relevant details for your test configuration.

• Test A

• Test B

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Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Checklist:

• Have you added unit/e2e tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

Re-running failed tests

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@hdefazio: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-raw	5f1ff04	link	true	/test e2e-raw
ci/prow/e2e-slow	5f1ff04	link	true	/test e2e-slow
ci/prow/e2e-fast	5f1ff04	link	true	/test e2e-fast

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