remove unnecessary RBAC in KCM: file removal

Description of problem:

We discovered that we are shipping unnecesary RBAC in https://coreos.slack.com/archives/CC3CZCQHM/p1667571136730989 .

This RBAC was only used 4.2 and 4.3 for

• for making a switch from configMaps to leases in leader election

and we should remove it

followup to https://issues.redhat.com/browse/OCPBUGS-3283 - the RBACs are not applied anymore, but we just need to remove the actual files from the repo. No behavioral change should occur with the file removal.

Version-Release number of selected component (if applicable):{code:none}

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