Robert/move amino stdtx (cosmos#7301)

* x/auth: move amino StdTx... to a legacy package

* legacytx: move RegisterLegacyAminoCodec from init to tests/init

* merge fixes

Co-authored-by: Aaron Craelius <aaron@regen.network>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

params/amino.go

@@ -5,7 +5,7 @@ package params
 import (
  "github.com/cosmos/cosmos-sdk/codec"
  "github.com/cosmos/cosmos-sdk/codec/types"
- authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+ "github.com/cosmos/cosmos-sdk/x/auth/legacy/legacytx"
 )
 
 // MakeEncodingConfig creates an EncodingConfig for an amino based test configuration.
@@ -17,7 +17,7 @@ func MakeEncodingConfig() EncodingConfig {
  return EncodingConfig{
  InterfaceRegistry: interfaceRegistry,
  Marshaler: marshaler,
- TxConfig: authtypes.StdTxConfig{Cdc: cdc},
+ TxConfig: legacytx.StdTxConfig{Cdc: cdc},
  Amino: cdc,
  }
 }