Update RHCOS to OCP version map (redhat-best-practices-for-k8s#2439)

Co-authored-by: sebrandon1 <[email protected]>

Author: github-actions[bot]

tests/platform/operatingsystem/files/rhcos_version_map

@@ -516,7 +516,6 @@
 4.6.0-rc.3 / 46.82.202010091720-0
 4.6.0-rc.4 / 46.82.202010091720-0
 4.6.1 / 46.82.202010091720-0
-4.6.10 / 46.82.202101042340-0
 4.6.12 / 46.82.202101131942-0
 4.6.13 / 46.82.202101191342-0
 4.6.15 / 46.82.202101262043-0