It doesn't seem like there were any buildings deleted here. I couldn't spot anything going back at least a year in the changeset history.

The neighbouring buildings were imported about 9 years ago, none of the changesets I checked imported anything into the empty blocks.
https://www.openstreetmap.org/changeset/45712177
https://www.openstreetmap.org/changeset/45759636
https://www.openstreetmap.org/changeset/45709858

The only buildings in the empty blocks were the 3 created in this 13 year old changeset https://www.openstreetmap.org/changeset/15241855
The fact that this one is still there leads tme to believe that these blocks just were never imported to begin with.