Revert "sdm: Conditionally revert "sdm: Implement ‘Null Display’ in SDM core""

This reverts commit 3c2298b15f3b5dd78aee41978a7d0f4a6bff65ee.

Reason for revert: no longer needed when using blobs that match tag
DISPLAY.LA.3.0.r1-10700-KAILUA.0.

Change-Id: I553c335225457b6ae8baebb2405cf3dfed3afd13
3 files changed