Revert "[wip] add incarnation to IH, remove tombstones from IH (#460)"

cmd/prometheus/dashboards/turbo_geth.json

cmd/restapi/apis/intermediate_hash_api.go

core/state/database.go

core/state/intermediate_hashes.go

core/state/intermediate_hashes_test.go

debug-web-ui/src/components/LookupIntermediateHashForm.js

debug-web-ui/src/utils/API.js

trie/resolver_stateful_cached.go

trie/resolver_stateful_test.go

trie/trie.go

trie/trie_observers.go

trie/trie_observers_test.go

trie/trie_witness.go