db_lmdb: errors dropping hf starting height db on reset are not fatal
db_lmdb: errors dropping hf starting height db on reset are not fatal

This db is now dropped unconditionally, so may or may not be there
in the first place.

ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,ranok/bitmonero,ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,eiabea/bitmonero