Revert "Always record row-level tombstones in index component; this time from the correct feature branch"

This reverts commits 811f82c5b151bb1f6178392470981883d5e1dfc5, 317ab72a8cc067bd16db63d9e6c19390e96075f9, 344f5fa5af64b601751269fc570fbf4de930e9e2, d7a09825025374b6a49a250467039dc15f36d053.