diff --git a/core/state/state_object.go b/core/state/state_object.go
index f93f47d5f..38621ffb6 100644
--- a/core/state/state_object.go
+++ b/core/state/state_object.go
@@ -450,9 +450,6 @@ func (s *stateObject) setBalance(amount *big.Int) {
 	s.data.Balance = amount
 }
 
-// Return the gas back to the origin. Used by the Virtual machine or Closures
-func (s *stateObject) ReturnGas(gas *big.Int) {}
-
 func (s *stateObject) deepCopy(db *StateDB) *stateObject {
 	stateObject := newObject(db, s.address, s.data)
 	if s.trie != nil {
diff --git a/core/state/statedb.go b/core/state/statedb.go
index 203556c6b..78393dea3 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -333,17 +333,6 @@ func (s *StateDB) GetStorageProof(a common.Address, key common.Hash) ([][]byte,
 	return proof, err
 }
 
-// GetStorageProofByHash returns the Merkle proof for given storage slot.
-func (s *StateDB) GetStorageProofByHash(a common.Address, key common.Hash) ([][]byte, error) {
-	var proof proofList
-	trie := s.StorageTrie(a)
-	if trie == nil {
-		return proof, errors.New("storage trie for requested address does not exist")
-	}
-	err := trie.Prove(crypto.Keccak256(key.Bytes()), 0, &proof)
-	return proof, err
-}
-
 // GetCommittedState retrieves a value from the given account's committed storage trie.
 func (s *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash {
 	stateObject := s.getStateObject(addr)
@@ -597,7 +586,6 @@ func (s *StateDB) createObject(addr common.Address) (newobj, prev *stateObject)
 		}
 	}
 	newobj = newObject(s, addr, Account{})
-	newobj.setNonce(0) // sets the object to dirty
 	if prev == nil {
 		s.journal.append(createObjectChange{account: &addr})
 	} else {
diff --git a/core/vm/logger_test.go b/core/vm/logger_test.go
index 0bbfd4469..730d8374b 100644
--- a/core/vm/logger_test.go
+++ b/core/vm/logger_test.go
@@ -30,7 +30,6 @@ type dummyContractRef struct {
 	calledForEach bool
 }
 
-func (dummyContractRef) ReturnGas(*big.Int)          {}
 func (dummyContractRef) Address() common.Address     { return common.Address{} }
 func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
 func (dummyContractRef) SetCode(common.Hash, []byte) {}
diff --git a/eth/tracers/tracer_test.go b/eth/tracers/tracer_test.go
index 038b3944c..cd1a8cddc 100644
--- a/eth/tracers/tracer_test.go
+++ b/eth/tracers/tracer_test.go
@@ -39,7 +39,6 @@ func (account) SetBalance(*big.Int)                                 {}
 func (account) SetNonce(uint64)                                     {}
 func (account) Balance() *big.Int                                   { return nil }
 func (account) Address() common.Address                             { return common.Address{} }
-func (account) ReturnGas(*big.Int)                                  {}
 func (account) SetCode(common.Hash, []byte)                         {}
 func (account) ForEachStorage(cb func(key, value common.Hash) bool) {}