Revert "BACKPORT: drm: Add HDR source metadata property"

This reverts commit 4ae8f7c4.

We don't need these drm blob properties on this branch.

Bug: 152417756
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: Ib715f4e3b6394091c8b537d4cb534c3b31d7f8c8