Revert "Hookup SDMCORE_HAS_IS_DISPLAY_HW_AVAILABLE_FUNC"

This reverts commit bc8d7739.

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

Change-Id: Ia89ce566a4cade6091a2dc6bc4e8b56ef7d1f73b