Revert "Reapply "[res] Optimize idmap data initialization in OMS""

This reverts commit f34b745c7d431eb614708a4cfb1e3278a9eae70a.

Reason for revert: <b/325161357>

Change-Id: I92d9892d4455c355f299e1edbf01c45de7aa4578
1 file changed