fix: increase nonce in ante handler for contract creation tx (#809)

Closes: #808
Solution:
- move nonce increment to ante handler
- revert nonce increment in apply message

build(deps): bump github.com/spf13/viper from 1.9.0 to 1.10.0 (#833)

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.9.0 to 1.10.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.9.0...v1.10.0)

---
updated-dependencies:
- dependency-name: github.com/spf13/viper
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

fix: remove unused code (#834)

Co-authored-by: Marko Baricevic <markobaricevic3778@gmail.com>
Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

rm

rm pkg

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

x/evm/keeper/grpc_query_test.go

@@ -678,6 +678,8 @@ func (suite *KeeperTestSuite) TestTraceTx() {
 			malleate: func() {
 				txIndex = 1
 				traceConfig = nil
+				// increase nonce to avoid address collision
+				suite.app.EvmKeeper.SetNonce(suite.address, suite.app.EvmKeeper.GetNonce(suite.address)+1)
 
 				contractAddr := suite.DeployTestContract(suite.T(), suite.address, sdk.NewIntWithDecimal(1000, 18).BigInt())
 				suite.Commit()
@@ -803,6 +805,8 @@ func (suite *KeeperTestSuite) TestTraceBlock() {
 			msg: "tracer with multiple transactions",
 			malleate: func() {
 				traceConfig = nil
+				// increase nonce to avoid address collision
+				suite.app.EvmKeeper.SetNonce(suite.address, suite.app.EvmKeeper.GetNonce(suite.address)+1)
 				contractAddr := suite.DeployTestContract(suite.T(), suite.address, sdk.NewIntWithDecimal(1000, 18).BigInt())
 				suite.Commit()
 				// create multiple transactions in the same block

x/evm/keeper/state_transition.go

@@ -343,7 +343,10 @@ func (k *Keeper) ApplyMessageWithConfig(msg core.Message, tracer vm.Tracer, comm
 	}
 
 	if contractCreation {
+		nonce := k.GetNonce(sender.Address())
 		ret, _, leftoverGas, vmErr = evm.Create(sender, msg.Data(), leftoverGas, msg.Value())
+		// revert nonce increment, because it's increased in ante handler
+		k.SetNonce(sender.Address(), nonce)
 	} else {
 		ret, leftoverGas, vmErr = evm.Call(sender, *msg.To(), msg.Data(), leftoverGas, msg.Value())
 	}