Revert "sdm: Revalidate layer stack on layer reconfig."

This reverts commit 7a30ce25240c5526605afc88db3f9a75eeb9ad71.
This change conflicts with the "Skip Validate" feature. The required
fix is included in "Skip Validate" feature changes.

CRs-Fixed: 2071632
Change-Id: I4f985f08df9e5bba3e2482fef177052db25e78ff
3 files changed