services: remove Getter as they generated as part of proto

[rchikatw]

• remove Getter as they are generated as part of proto
• not removing GetPlatformVersion() & GetOperatorVersion() as they are already used. Leela will take care of removing this.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@rchikatw: 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/ci-bundle-ocs-operator-bundle	f406618	link	true	/test ci-bundle-ocs-operator-bundle
ci/prow/ocs-operator-bundle-e2e-aws	f406618	link	true	/test ocs-operator-bundle-e2e-aws
ci/prow/images	f406618	link	true	/test images

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